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Finding the Fourth Proportional to 66,093,661.80, 99,140,492.70 and 52,488,772.20

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Solution

The fourth proportional to 66,093,661.80, 99,140,492.70 and 52,488,772.20 is: 78,733,158.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,093,661.80 : 99,140,492.70 = 52,488,772.20 : x
  2. Step 2: Convert to fraction form
    66,093,661.80/99,140,492.70 = 52,488,772.20/x
  3. Step 3: Cross multiply
    66,093,661.80x = 99,140,492.70 × 52,488,772.20
  4. Step 4: Simplify right side
    66,093,661.80x = 5,203,762,737,126,063
  5. Step 5: Solve for x
    x = 5,203,762,737,126,063/66,093,661.80
  6. Step 6: Final answer
    x = 78,733,158.30

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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.