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Finding the Fourth Proportional to 656,393.60, 984,590.40 and 256,901.60

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Solution

The fourth proportional to 656,393.60, 984,590.40 and 256,901.60 is: 385,352.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,393.60 : 984,590.40 = 256,901.60 : x
  2. Step 2: Convert to fraction form
    656,393.60/984,590.40 = 256,901.60/x
  3. Step 3: Cross multiply
    656,393.60x = 984,590.40 × 256,901.60
  4. Step 4: Simplify right side
    656,393.60x = 252,942,849,104.64
  5. Step 5: Solve for x
    x = 252,942,849,104.64/656,393.60
  6. Step 6: Final answer
    x = 385,352.40

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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.