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Finding the Fourth Proportional to 527,544.78, 791,318.16 and 128,185.89

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Solution

The fourth proportional to 527,544.78, 791,318.16 and 128,185.89 is: 192,279.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,544.78 : 791,318.16 = 128,185.89 : x
  2. Step 2: Convert to fraction form
    527,544.78/791,318.16 = 128,185.89/x
  3. Step 3: Cross multiply
    527,544.78x = 791,318.16 × 128,185.89
  4. Step 4: Simplify right side
    527,544.78x = 101,435,822,612.76
  5. Step 5: Solve for x
    x = 101,435,822,612.76/527,544.78
  6. Step 6: Final answer
    x = 192,279.08

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Similar ratio
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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.