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Finding the Fourth Proportional to 527,615.60, 791,423.40 and 172,641.20

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Solution

The fourth proportional to 527,615.60, 791,423.40 and 172,641.20 is: 258,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,615.60 : 791,423.40 = 172,641.20 : x
  2. Step 2: Convert to fraction form
    527,615.60/791,423.40 = 172,641.20/x
  3. Step 3: Cross multiply
    527,615.60x = 791,423.40 × 172,641.20
  4. Step 4: Simplify right side
    527,615.60x = 136,632,285,484.08
  5. Step 5: Solve for x
    x = 136,632,285,484.08/527,615.60
  6. Step 6: Final answer
    x = 258,961.80

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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.