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Finding the Fourth Proportional to 680,032.29, 938,386.71 and 393,570.12

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Solution

The fourth proportional to 680,032.29, 938,386.71 and 393,570.12 is: 543,093.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,032.29 : 938,386.71 = 393,570.12 : x
  2. Step 2: Convert to fraction form
    680,032.29/938,386.71 = 393,570.12/x
  3. Step 3: Cross multiply
    680,032.29x = 938,386.71 × 393,570.12
  4. Step 4: Simplify right side
    680,032.29x = 369,320,970,061.11
  5. Step 5: Solve for x
    x = 369,320,970,061.11/680,032.29
  6. Step 6: Final answer
    x = 543,093.28

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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.