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Finding the Fourth Proportional to 517,798.17, 714,515.99 and 288,338.13

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Solution

The fourth proportional to 517,798.17, 714,515.99 and 288,338.13 is: 397,881.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,798.17 : 714,515.99 = 288,338.13 : x
  2. Step 2: Convert to fraction form
    517,798.17/714,515.99 = 288,338.13/x
  3. Step 3: Cross multiply
    517,798.17x = 714,515.99 × 288,338.13
  4. Step 4: Simplify right side
    517,798.17x = 206,022,202,970.01
  5. Step 5: Solve for x
    x = 206,022,202,970.01/517,798.17
  6. Step 6: Final answer
    x = 397,881.29

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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.