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Finding the Fourth Proportional to 343,338.40, 515,007.60 and 291,498.40

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Solution

The fourth proportional to 343,338.40, 515,007.60 and 291,498.40 is: 437,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,338.40 : 515,007.60 = 291,498.40 : x
  2. Step 2: Convert to fraction form
    343,338.40/515,007.60 = 291,498.40/x
  3. Step 3: Cross multiply
    343,338.40x = 515,007.60 × 291,498.40
  4. Step 4: Simplify right side
    343,338.40x = 150,123,891,387.84
  5. Step 5: Solve for x
    x = 150,123,891,387.84/343,338.40
  6. Step 6: Final answer
    x = 437,247.60

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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.