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Finding the Fourth Proportional to 243,330.60, 364,871.28 and 129,543.04

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Solution

The fourth proportional to 243,330.60, 364,871.28 and 129,543.04 is: 194,248.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,330.60 : 364,871.28 = 129,543.04 : x
  2. Step 2: Convert to fraction form
    243,330.60/364,871.28 = 129,543.04/x
  3. Step 3: Cross multiply
    243,330.60x = 364,871.28 × 129,543.04
  4. Step 4: Simplify right side
    243,330.60x = 47,266,534,819.89
  5. Step 5: Solve for x
    x = 47,266,534,819.89/243,330.60
  6. Step 6: Final answer
    x = 194,248.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.