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Finding the Fourth Proportional to 715,952.57, 988,014.32 and 393,683.54

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Solution

The fourth proportional to 715,952.57, 988,014.32 and 393,683.54 is: 543,283.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,952.57 : 988,014.32 = 393,683.54 : x
  2. Step 2: Convert to fraction form
    715,952.57/988,014.32 = 393,683.54/x
  3. Step 3: Cross multiply
    715,952.57x = 988,014.32 × 393,683.54
  4. Step 4: Simplify right side
    715,952.57x = 388,964,969,636.12
  5. Step 5: Solve for x
    x = 388,964,969,636.12/715,952.57
  6. Step 6: Final answer
    x = 543,283.16

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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.