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Finding the Fourth Proportional to 612,683.77, 845,681.66 and 408,734.19

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Solution

The fourth proportional to 612,683.77, 845,681.66 and 408,734.19 is: 564,171.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,683.77 : 845,681.66 = 408,734.19 : x
  2. Step 2: Convert to fraction form
    612,683.77/845,681.66 = 408,734.19/x
  3. Step 3: Cross multiply
    612,683.77x = 845,681.66 × 408,734.19
  4. Step 4: Simplify right side
    612,683.77x = 345,659,003,664.37
  5. Step 5: Solve for x
    x = 345,659,003,664.37/612,683.77
  6. Step 6: Final answer
    x = 564,171.96

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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.