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Finding the Fourth Proportional to 129,728.62, 194,592.93 and 59,666.86

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Solution

The fourth proportional to 129,728.62, 194,592.93 and 59,666.86 is: 89,500.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,728.62 : 194,592.93 = 59,666.86 : x
  2. Step 2: Convert to fraction form
    129,728.62/194,592.93 = 59,666.86/x
  3. Step 3: Cross multiply
    129,728.62x = 194,592.93 × 59,666.86
  4. Step 4: Simplify right side
    129,728.62x = 11,610,749,111.30
  5. Step 5: Solve for x
    x = 11,610,749,111.30/129,728.62
  6. Step 6: Final answer
    x = 89,500.29

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1.5x scale

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.