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Finding the Fourth Proportional to 100,715,672.70, 151,073,509.05 and 99,036,056.70

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Solution

The fourth proportional to 100,715,672.70, 151,073,509.05 and 99,036,056.70 is: 148,554,085.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,715,672.70 : 151,073,509.05 = 99,036,056.70 : x
  2. Step 2: Convert to fraction form
    100,715,672.70/151,073,509.05 = 99,036,056.70/x
  3. Step 3: Cross multiply
    100,715,672.70x = 151,073,509.05 × 99,036,056.70
  4. Step 4: Simplify right side
    100,715,672.70x = 14,961,724,608,143,764
  5. Step 5: Solve for x
    x = 14,961,724,608,143,764/100,715,672.70
  6. Step 6: Final answer
    x = 148,554,085.05

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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.