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Finding the Fourth Proportional to 90,851,691.70, 136,277,537.55 and 90,851,691.70

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Solution

The fourth proportional to 90,851,691.70, 136,277,537.55 and 90,851,691.70 is: 136,277,537.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,851,691.70 : 136,277,537.55 = 90,851,691.70 : x
  2. Step 2: Convert to fraction form
    90,851,691.70/136,277,537.55 = 90,851,691.70/x
  3. Step 3: Cross multiply
    90,851,691.70x = 136,277,537.55 × 90,851,691.70
  4. Step 4: Simplify right side
    90,851,691.70x = 12,381,044,827,127,774
  5. Step 5: Solve for x
    x = 12,381,044,827,127,774/90,851,691.70
  6. Step 6: Final answer
    x = 136,277,537.55

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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.