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Finding the Fourth Proportional to 325,070.81, 487,702.80 and 156,542.41

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Solution

The fourth proportional to 325,070.81, 487,702.80 and 156,542.41 is: 234,860.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,070.81 : 487,702.80 = 156,542.41 : x
  2. Step 2: Convert to fraction form
    325,070.81/487,702.80 = 156,542.41/x
  3. Step 3: Cross multiply
    325,070.81x = 487,702.80 × 156,542.41
  4. Step 4: Simplify right side
    325,070.81x = 76,346,171,675.75
  5. Step 5: Solve for x
    x = 76,346,171,675.75/325,070.81
  6. Step 6: Final answer
    x = 234,860.13

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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.