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Finding the Fourth Proportional to 75,219.95, 103,789.91 and 48,356.30

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Solution

The fourth proportional to 75,219.95, 103,789.91 and 48,356.30 is: 66,722.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,219.95 : 103,789.91 = 48,356.30 : x
  2. Step 2: Convert to fraction form
    75,219.95/103,789.91 = 48,356.30/x
  3. Step 3: Cross multiply
    75,219.95x = 103,789.91 × 48,356.30
  4. Step 4: Simplify right side
    75,219.95x = 5,018,896,024.93
  5. Step 5: Solve for x
    x = 5,018,896,024.93/75,219.95
  6. Step 6: Final answer
    x = 66,722.94

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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.