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Finding the Fourth Proportional to 66,426,627.80, 99,639,941.70 and 57,468,675.80

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Solution

The fourth proportional to 66,426,627.80, 99,639,941.70 and 57,468,675.80 is: 86,203,013.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,426,627.80 : 99,639,941.70 = 57,468,675.80 : x
  2. Step 2: Convert to fraction form
    66,426,627.80/99,639,941.70 = 57,468,675.80/x
  3. Step 3: Cross multiply
    66,426,627.80x = 99,639,941.70 × 57,468,675.80
  4. Step 4: Simplify right side
    66,426,627.80x = 5,726,175,506,288,201
  5. Step 5: Solve for x
    x = 5,726,175,506,288,201/66,426,627.80
  6. Step 6: Final answer
    x = 86,203,013.70

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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.