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Finding the Fourth Proportional to 400,130.39, 600,618.50 and 391,094.84

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Solution

The fourth proportional to 400,130.39, 600,618.50 and 391,094.84 is: 587,055.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,130.39 : 600,618.50 = 391,094.84 : x
  2. Step 2: Convert to fraction form
    400,130.39/600,618.50 = 391,094.84/x
  3. Step 3: Cross multiply
    400,130.39x = 600,618.50 × 391,094.84
  4. Step 4: Simplify right side
    400,130.39x = 234,898,796,158.54
  5. Step 5: Solve for x
    x = 234,898,796,158.54/400,130.39
  6. Step 6: Final answer
    x = 587,055.62

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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.