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Finding the Fourth Proportional to 613,931.40, 922,865.40 and 437,659.20

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Solution

The fourth proportional to 613,931.40, 922,865.40 and 437,659.20 is: 657,891.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,931.40 : 922,865.40 = 437,659.20 : x
  2. Step 2: Convert to fraction form
    613,931.40/922,865.40 = 437,659.20/x
  3. Step 3: Cross multiply
    613,931.40x = 922,865.40 × 437,659.20
  4. Step 4: Simplify right side
    613,931.40x = 403,900,532,671.68
  5. Step 5: Solve for x
    x = 403,900,532,671.68/613,931.40
  6. Step 6: Final answer
    x = 657,891.96

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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.