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Finding the Fourth Proportional to 661,152.40, 991,728.60 and 656,237.20

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Solution

The fourth proportional to 661,152.40, 991,728.60 and 656,237.20 is: 984,355.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,152.40 : 991,728.60 = 656,237.20 : x
  2. Step 2: Convert to fraction form
    661,152.40/991,728.60 = 656,237.20/x
  3. Step 3: Cross multiply
    661,152.40x = 991,728.60 × 656,237.20
  4. Step 4: Simplify right side
    661,152.40x = 650,809,199,623.92
  5. Step 5: Solve for x
    x = 650,809,199,623.92/661,152.40
  6. Step 6: Final answer
    x = 984,355.80

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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.