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Finding the Fourth Proportional to 517,437.60, 714,062.88 and 291,083.28

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Solution

The fourth proportional to 517,437.60, 714,062.88 and 291,083.28 is: 401,694.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,437.60 : 714,062.88 = 291,083.28 : x
  2. Step 2: Convert to fraction form
    517,437.60/714,062.88 = 291,083.28/x
  3. Step 3: Cross multiply
    517,437.60x = 714,062.88 × 291,083.28
  4. Step 4: Simplify right side
    517,437.60x = 207,851,765,236.65
  5. Step 5: Solve for x
    x = 207,851,765,236.65/517,437.60
  6. Step 6: Final answer
    x = 401,694.36

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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.