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Finding the Fourth Proportional to 124,804.92, 172,206.90 and 71,088.76

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Solution

The fourth proportional to 124,804.92, 172,206.90 and 71,088.76 is: 98,088.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,804.92 : 172,206.90 = 71,088.76 : x
  2. Step 2: Convert to fraction form
    124,804.92/172,206.90 = 71,088.76/x
  3. Step 3: Cross multiply
    124,804.92x = 172,206.90 × 71,088.76
  4. Step 4: Simplify right side
    124,804.92x = 12,241,974,984.44
  5. Step 5: Solve for x
    x = 12,241,974,984.44/124,804.92
  6. Step 6: Final answer
    x = 98,088.88

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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.