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Finding the Fourth Proportional to 719,114.64, 992,377.44 and 396,824.64

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Solution

The fourth proportional to 719,114.64, 992,377.44 and 396,824.64 is: 547,617.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,114.64 : 992,377.44 = 396,824.64 : x
  2. Step 2: Convert to fraction form
    719,114.64/992,377.44 = 396,824.64/x
  3. Step 3: Cross multiply
    719,114.64x = 992,377.44 × 396,824.64
  4. Step 4: Simplify right side
    719,114.64x = 393,799,820,372.12
  5. Step 5: Solve for x
    x = 393,799,820,372.12/719,114.64
  6. Step 6: Final answer
    x = 547,617.58

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Double scale
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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.