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Finding the Fourth Proportional to 77,018.71, 115,527.15 and 24,428.65

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Solution

The fourth proportional to 77,018.71, 115,527.15 and 24,428.65 is: 36,642.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,018.71 : 115,527.15 = 24,428.65 : x
  2. Step 2: Convert to fraction form
    77,018.71/115,527.15 = 24,428.65/x
  3. Step 3: Cross multiply
    77,018.71x = 115,527.15 × 24,428.65
  4. Step 4: Simplify right side
    77,018.71x = 2,822,172,312.85
  5. Step 5: Solve for x
    x = 2,822,172,312.85/77,018.71
  6. Step 6: Final answer
    x = 36,642.68

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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.