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Finding the Fourth Proportional to 672,653.75, 928,148.01 and 386,167.68

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Solution

The fourth proportional to 672,653.75, 928,148.01 and 386,167.68 is: 532,845.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,653.75 : 928,148.01 = 386,167.68 : x
  2. Step 2: Convert to fraction form
    672,653.75/928,148.01 = 386,167.68/x
  3. Step 3: Cross multiply
    672,653.75x = 928,148.01 × 386,167.68
  4. Step 4: Simplify right side
    672,653.75x = 358,420,763,718.32
  5. Step 5: Solve for x
    x = 358,420,763,718.32/672,653.75
  6. Step 6: Final answer
    x = 532,845.86

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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.