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Finding the Fourth Proportional to 719,094.60, 992,311.92 and 396,741.60

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Solution

The fourth proportional to 719,094.60, 992,311.92 and 396,741.60 is: 547,482.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,094.60 : 992,311.92 = 396,741.60 : x
  2. Step 2: Convert to fraction form
    719,094.60/992,311.92 = 396,741.60/x
  3. Step 3: Cross multiply
    719,094.60x = 992,311.92 × 396,741.60
  4. Step 4: Simplify right side
    719,094.60x = 393,691,418,839.87
  5. Step 5: Solve for x
    x = 393,691,418,839.87/719,094.60
  6. Step 6: Final answer
    x = 547,482.10

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.