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Finding the Fourth Proportional to 66,459,847.70, 99,689,771.55 and 66,459,847.70

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Solution

The fourth proportional to 66,459,847.70, 99,689,771.55 and 66,459,847.70 is: 99,689,771.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,459,847.70 : 99,689,771.55 = 66,459,847.70 : x
  2. Step 2: Convert to fraction form
    66,459,847.70/99,689,771.55 = 66,459,847.70/x
  3. Step 3: Cross multiply
    66,459,847.70x = 99,689,771.55 × 66,459,847.70
  4. Step 4: Simplify right side
    66,459,847.70x = 6,625,367,034,460,793
  5. Step 5: Solve for x
    x = 6,625,367,034,460,793/66,459,847.70
  6. Step 6: Final answer
    x = 99,689,771.55

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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.