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Finding the Fourth Proportional to 145,807.92, 218,711.89 and 34,999.92

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Solution

The fourth proportional to 145,807.92, 218,711.89 and 34,999.92 is: 52,499.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,807.92 : 218,711.89 = 34,999.92 : x
  2. Step 2: Convert to fraction form
    145,807.92/218,711.89 = 34,999.92/x
  3. Step 3: Cross multiply
    145,807.92x = 218,711.89 × 34,999.92
  4. Step 4: Simplify right side
    145,807.92x = 7,654,898,653.05
  5. Step 5: Solve for x
    x = 7,654,898,653.05/145,807.92
  6. Step 6: Final answer
    x = 52,499.88

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Half scale
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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.