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Finding the Fourth Proportional to 99,864,211.80, 149,572,368.90 and 99,864,211.80

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Solution

The fourth proportional to 99,864,211.80, 149,572,368.90 and 99,864,211.80 is: 149,572,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,864,211.80 : 149,572,368.90 = 99,864,211.80 : x
  2. Step 2: Convert to fraction form
    99,864,211.80/149,572,368.90 = 99,864,211.80/x
  3. Step 3: Cross multiply
    99,864,211.80x = 149,572,368.90 × 99,864,211.80
  4. Step 4: Simplify right side
    99,864,211.80x = 14,936,926,727,257,334
  5. Step 5: Solve for x
    x = 14,936,926,727,257,334/99,864,211.80
  6. Step 6: Final answer
    x = 149,572,368.90

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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.