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Finding the Fourth Proportional to 103,663.90, 155,495.85 and 82,927.90

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Solution

The fourth proportional to 103,663.90, 155,495.85 and 82,927.90 is: 124,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,663.90 : 155,495.85 = 82,927.90 : x
  2. Step 2: Convert to fraction form
    103,663.90/155,495.85 = 82,927.90/x
  3. Step 3: Cross multiply
    103,663.90x = 155,495.85 × 82,927.90
  4. Step 4: Simplify right side
    103,663.90x = 12,894,944,299.22
  5. Step 5: Solve for x
    x = 12,894,944,299.22/103,663.90
  6. Step 6: Final answer
    x = 124,391.85

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1.5x scale

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.