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Finding the Fourth Proportional to 562,559.48, 776,329.26 and 304,436.24

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Solution

The fourth proportional to 562,559.48, 776,329.26 and 304,436.24 is: 420,120.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,559.48 : 776,329.26 = 304,436.24 : x
  2. Step 2: Convert to fraction form
    562,559.48/776,329.26 = 304,436.24/x
  3. Step 3: Cross multiply
    562,559.48x = 776,329.26 × 304,436.24
  4. Step 4: Simplify right side
    562,559.48x = 236,342,760,916.38
  5. Step 5: Solve for x
    x = 236,342,760,916.38/562,559.48
  6. Step 6: Final answer
    x = 420,120.48

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Half scale
Find fourth proportional to 1,125,118.96, 1,552,658.52 and 608,872.48
Double scale
Find fourth proportional to 562,560.48, 776,330.64 and 304,437.24
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.