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Finding the Fourth Proportional to 99,651,207.70, 149,476,811.55 and 83,495,401.30

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Solution

The fourth proportional to 99,651,207.70, 149,476,811.55 and 83,495,401.30 is: 125,243,101.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,651,207.70 : 149,476,811.55 = 83,495,401.30 : x
  2. Step 2: Convert to fraction form
    99,651,207.70/149,476,811.55 = 83,495,401.30/x
  3. Step 3: Cross multiply
    99,651,207.70x = 149,476,811.55 × 83,495,401.30
  4. Step 4: Simplify right side
    99,651,207.70x = 12,480,626,365,411,726
  5. Step 5: Solve for x
    x = 12,480,626,365,411,726/99,651,207.70
  6. Step 6: Final answer
    x = 125,243,101.95

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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.