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Finding the Fourth Proportional to 42,915.70, 64,373.55 and 29,793.70

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Solution

The fourth proportional to 42,915.70, 64,373.55 and 29,793.70 is: 44,690.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,915.70 : 64,373.55 = 29,793.70 : x
  2. Step 2: Convert to fraction form
    42,915.70/64,373.55 = 29,793.70/x
  3. Step 3: Cross multiply
    42,915.70x = 64,373.55 × 29,793.70
  4. Step 4: Simplify right side
    42,915.70x = 1,917,926,236.64
  5. Step 5: Solve for x
    x = 1,917,926,236.64/42,915.70
  6. Step 6: Final answer
    x = 44,690.55

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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.