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Finding the Fourth Proportional to 83,488.76, 115,231.90 and 76,763.76

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Solution

The fourth proportional to 83,488.76, 115,231.90 and 76,763.76 is: 105,950.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,488.76 : 115,231.90 = 76,763.76 : x
  2. Step 2: Convert to fraction form
    83,488.76/115,231.90 = 76,763.76/x
  3. Step 3: Cross multiply
    83,488.76x = 115,231.90 × 76,763.76
  4. Step 4: Simplify right side
    83,488.76x = 8,845,633,915.94
  5. Step 5: Solve for x
    x = 8,845,633,915.94/83,488.76
  6. Step 6: Final answer
    x = 105,950.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.