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Finding the Fourth Proportional to 105,410.92, 145,220.74 and 73,522.92

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Solution

The fourth proportional to 105,410.92, 145,220.74 and 73,522.92 is: 101,289.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,410.92 : 145,220.74 = 73,522.92 : x
  2. Step 2: Convert to fraction form
    105,410.92/145,220.74 = 73,522.92/x
  3. Step 3: Cross multiply
    105,410.92x = 145,220.74 × 73,522.92
  4. Step 4: Simplify right side
    105,410.92x = 10,677,052,849.36
  5. Step 5: Solve for x
    x = 10,677,052,849.36/105,410.92
  6. Step 6: Final answer
    x = 101,289.82

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Double scale
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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.