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Finding the Fourth Proportional to 100,602,279.70, 150,903,419.55 and 87,847,695.70

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Solution

The fourth proportional to 100,602,279.70, 150,903,419.55 and 87,847,695.70 is: 131,771,543.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,602,279.70 : 150,903,419.55 = 87,847,695.70 : x
  2. Step 2: Convert to fraction form
    100,602,279.70/150,903,419.55 = 87,847,695.70/x
  3. Step 3: Cross multiply
    100,602,279.70x = 150,903,419.55 × 87,847,695.70
  4. Step 4: Simplify right side
    100,602,279.70x = 13,256,517,680,717,832
  5. Step 5: Solve for x
    x = 13,256,517,680,717,832/100,602,279.70
  6. Step 6: Final answer
    x = 131,771,543.55

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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.