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Finding the Fourth Proportional to 99,667,312.80, 149,500,969.20 and 99,667,312.80

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Solution

The fourth proportional to 99,667,312.80, 149,500,969.20 and 99,667,312.80 is: 149,500,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,667,312.80 : 149,500,969.20 = 99,667,312.80 : x
  2. Step 2: Convert to fraction form
    99,667,312.80/149,500,969.20 = 99,667,312.80/x
  3. Step 3: Cross multiply
    99,667,312.80x = 149,500,969.20 × 99,667,312.80
  4. Step 4: Simplify right side
    99,667,312.80x = 14,900,359,861,159,564
  5. Step 5: Solve for x
    x = 14,900,359,861,159,564/99,667,312.80
  6. Step 6: Final answer
    x = 149,500,969.20

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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.