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Finding the Fourth Proportional to 123,802.40, 185,752.20 and 48,909.80

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Solution

The fourth proportional to 123,802.40, 185,752.20 and 48,909.80 is: 73,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,802.40 : 185,752.20 = 48,909.80 : x
  2. Step 2: Convert to fraction form
    123,802.40/185,752.20 = 48,909.80/x
  3. Step 3: Cross multiply
    123,802.40x = 185,752.20 × 48,909.80
  4. Step 4: Simplify right side
    123,802.40x = 9,085,102,951.56
  5. Step 5: Solve for x
    x = 9,085,102,951.56/123,802.40
  6. Step 6: Final answer
    x = 73,383.90

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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.