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Finding the Fourth Proportional to 363,981.60, 545,972.40 and 127,299.60

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Solution

The fourth proportional to 363,981.60, 545,972.40 and 127,299.60 is: 190,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,981.60 : 545,972.40 = 127,299.60 : x
  2. Step 2: Convert to fraction form
    363,981.60/545,972.40 = 127,299.60/x
  3. Step 3: Cross multiply
    363,981.60x = 545,972.40 × 127,299.60
  4. Step 4: Simplify right side
    363,981.60x = 69,502,068,131.04
  5. Step 5: Solve for x
    x = 69,502,068,131.04/363,981.60
  6. Step 6: Final answer
    x = 190,949.40

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Half scale
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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.