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Finding the Fourth Proportional to 108,441.86, 149,621.28 and 62,490.20

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Solution

The fourth proportional to 108,441.86, 149,621.28 and 62,490.20 is: 86,220.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,441.86 : 149,621.28 = 62,490.20 : x
  2. Step 2: Convert to fraction form
    108,441.86/149,621.28 = 62,490.20/x
  3. Step 3: Cross multiply
    108,441.86x = 149,621.28 × 62,490.20
  4. Step 4: Simplify right side
    108,441.86x = 9,349,863,711.46
  5. Step 5: Solve for x
    x = 9,349,863,711.46/108,441.86
  6. Step 6: Final answer
    x = 86,220.06

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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.