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Finding the Fourth Proportional to 66,532,655.80, 99,798,983.70 and 43,574,404.60

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Solution

The fourth proportional to 66,532,655.80, 99,798,983.70 and 43,574,404.60 is: 65,361,606.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,532,655.80 : 99,798,983.70 = 43,574,404.60 : x
  2. Step 2: Convert to fraction form
    66,532,655.80/99,798,983.70 = 43,574,404.60/x
  3. Step 3: Cross multiply
    66,532,655.80x = 99,798,983.70 × 43,574,404.60
  4. Step 4: Simplify right side
    66,532,655.80x = 4,348,681,294,412,605.50
  5. Step 5: Solve for x
    x = 4,348,681,294,412,605.50/66,532,655.80
  6. Step 6: Final answer
    x = 65,361,606.90

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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.