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Finding the Fourth Proportional to 341,909.38, 512,935.35 and 105,240.34

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Solution

The fourth proportional to 341,909.38, 512,935.35 and 105,240.34 is: 157,882.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,909.38 : 512,935.35 = 105,240.34 : x
  2. Step 2: Convert to fraction form
    341,909.38/512,935.35 = 105,240.34/x
  3. Step 3: Cross multiply
    341,909.38x = 512,935.35 × 105,240.34
  4. Step 4: Simplify right side
    341,909.38x = 53,981,490,632.02
  5. Step 5: Solve for x
    x = 53,981,490,632.02/341,909.38
  6. Step 6: Final answer
    x = 157,882.45

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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.