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Finding the Fourth Proportional to 81,173.46, 112,019.07 and 45,363.46

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Solution

The fourth proportional to 81,173.46, 112,019.07 and 45,363.46 is: 62,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,173.46 : 112,019.07 = 45,363.46 : x
  2. Step 2: Convert to fraction form
    81,173.46/112,019.07 = 45,363.46/x
  3. Step 3: Cross multiply
    81,173.46x = 112,019.07 × 45,363.46
  4. Step 4: Simplify right side
    81,173.46x = 5,081,572,601.18
  5. Step 5: Solve for x
    x = 5,081,572,601.18/81,173.46
  6. Step 6: Final answer
    x = 62,601.40

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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.