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Finding the Fourth Proportional to 325,116.90, 487,675.35 and 185,148.90

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Solution

The fourth proportional to 325,116.90, 487,675.35 and 185,148.90 is: 277,723.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,116.90 : 487,675.35 = 185,148.90 : x
  2. Step 2: Convert to fraction form
    325,116.90/487,675.35 = 185,148.90/x
  3. Step 3: Cross multiply
    325,116.90x = 487,675.35 × 185,148.90
  4. Step 4: Simplify right side
    325,116.90x = 90,292,554,609.62
  5. Step 5: Solve for x
    x = 90,292,554,609.62/325,116.90
  6. Step 6: Final answer
    x = 277,723.35

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Double scale
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Similar ratio
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1.5x scale

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.