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Finding the Fourth Proportional to 186,752.78, 257,720.70 and 101,871.62

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Solution

The fourth proportional to 186,752.78, 257,720.70 and 101,871.62 is: 140,583.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,752.78 : 257,720.70 = 101,871.62 : x
  2. Step 2: Convert to fraction form
    186,752.78/257,720.70 = 101,871.62/x
  3. Step 3: Cross multiply
    186,752.78x = 257,720.70 × 101,871.62
  4. Step 4: Simplify right side
    186,752.78x = 26,254,425,216.53
  5. Step 5: Solve for x
    x = 26,254,425,216.53/186,752.78
  6. Step 6: Final answer
    x = 140,583.85

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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.