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Finding the Fourth Proportional to 70,387.53, 97,102.31 and 40,562.25

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Solution

The fourth proportional to 70,387.53, 97,102.31 and 40,562.25 is: 55,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,387.53 : 97,102.31 = 40,562.25 : x
  2. Step 2: Convert to fraction form
    70,387.53/97,102.31 = 40,562.25/x
  3. Step 3: Cross multiply
    70,387.53x = 97,102.31 × 40,562.25
  4. Step 4: Simplify right side
    70,387.53x = 3,938,687,970.99
  5. Step 5: Solve for x
    x = 3,938,687,970.99/70,387.53
  6. Step 6: Final answer
    x = 55,957.18

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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.