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Finding the Fourth Proportional to 502,148.28, 753,248.34 and 128,174.52

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Solution

The fourth proportional to 502,148.28, 753,248.34 and 128,174.52 is: 192,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,148.28 : 753,248.34 = 128,174.52 : x
  2. Step 2: Convert to fraction form
    502,148.28/753,248.34 = 128,174.52/x
  3. Step 3: Cross multiply
    502,148.28x = 753,248.34 × 128,174.52
  4. Step 4: Simplify right side
    502,148.28x = 96,547,244,420.30
  5. Step 5: Solve for x
    x = 96,547,244,420.30/502,148.28
  6. Step 6: Final answer
    x = 192,268.40

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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.