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Finding the Fourth Proportional to 65,098.49, 89,806.12 and 38,240.51

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Solution

The fourth proportional to 65,098.49, 89,806.12 and 38,240.51 is: 52,754.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,098.49 : 89,806.12 = 38,240.51 : x
  2. Step 2: Convert to fraction form
    65,098.49/89,806.12 = 38,240.51/x
  3. Step 3: Cross multiply
    65,098.49x = 89,806.12 × 38,240.51
  4. Step 4: Simplify right side
    65,098.49x = 3,434,231,285.29
  5. Step 5: Solve for x
    x = 3,434,231,285.29/65,098.49
  6. Step 6: Final answer
    x = 52,754.40

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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.