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Finding the Fourth Proportional to 77,688.71, 107,209.82 and 44,154.71

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Solution

The fourth proportional to 77,688.71, 107,209.82 and 44,154.71 is: 60,933.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,688.71 : 107,209.82 = 44,154.71 : x
  2. Step 2: Convert to fraction form
    77,688.71/107,209.82 = 44,154.71/x
  3. Step 3: Cross multiply
    77,688.71x = 107,209.82 × 44,154.71
  4. Step 4: Simplify right side
    77,688.71x = 4,733,817,754.43
  5. Step 5: Solve for x
    x = 4,733,817,754.43/77,688.71
  6. Step 6: Final answer
    x = 60,933.15

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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.