Home / 527,890.10-791,835.15-128,527.70

Finding the Fourth Proportional to 527,890.10, 791,835.15 and 128,527.70

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Solution

The fourth proportional to 527,890.10, 791,835.15 and 128,527.70 is: 192,791.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,890.10 : 791,835.15 = 128,527.70 : x
  2. Step 2: Convert to fraction form
    527,890.10/791,835.15 = 128,527.70/x
  3. Step 3: Cross multiply
    527,890.10x = 791,835.15 × 128,527.70
  4. Step 4: Simplify right side
    527,890.10x = 101,772,750,608.66
  5. Step 5: Solve for x
    x = 101,772,750,608.66/527,890.10
  6. Step 6: Final answer
    x = 192,791.55

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Double scale
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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.