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Finding the Fourth Proportional to 242,148.71, 334,169.69 and 134,728.76

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Solution

The fourth proportional to 242,148.71, 334,169.69 and 134,728.76 is: 185,928.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,148.71 : 334,169.69 = 134,728.76 : x
  2. Step 2: Convert to fraction form
    242,148.71/334,169.69 = 134,728.76/x
  3. Step 3: Cross multiply
    242,148.71x = 334,169.69 × 134,728.76
  4. Step 4: Simplify right side
    242,148.71x = 45,022,265,618.79
  5. Step 5: Solve for x
    x = 45,022,265,618.79/242,148.71
  6. Step 6: Final answer
    x = 185,928.17

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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.