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Finding the Fourth Proportional to 265,516.65, 398,127.38 and 87,926.81

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Solution

The fourth proportional to 265,516.65, 398,127.38 and 87,926.81 is: 131,841.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,516.65 : 398,127.38 = 87,926.81 : x
  2. Step 2: Convert to fraction form
    265,516.65/398,127.38 = 87,926.81/x
  3. Step 3: Cross multiply
    265,516.65x = 398,127.38 × 87,926.81
  4. Step 4: Simplify right side
    265,516.65x = 35,006,068,066.79
  5. Step 5: Solve for x
    x = 35,006,068,066.79/265,516.65
  6. Step 6: Final answer
    x = 131,841.33

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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.