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Finding the Fourth Proportional to 552,721.20, 762,687.48 and 348,695.16

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Solution

The fourth proportional to 552,721.20, 762,687.48 and 348,695.16 is: 481,156.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,721.20 : 762,687.48 = 348,695.16 : x
  2. Step 2: Convert to fraction form
    552,721.20/762,687.48 = 348,695.16/x
  3. Step 3: Cross multiply
    552,721.20x = 762,687.48 × 348,695.16
  4. Step 4: Simplify right side
    552,721.20x = 265,945,432,868.60
  5. Step 5: Solve for x
    x = 265,945,432,868.60/552,721.20
  6. Step 6: Final answer
    x = 481,156.56

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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.