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Finding the Fourth Proportional to 98,321.76, 135,689.28 and 58,058.88

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Solution

The fourth proportional to 98,321.76, 135,689.28 and 58,058.88 is: 80,124.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,321.76 : 135,689.28 = 58,058.88 : x
  2. Step 2: Convert to fraction form
    98,321.76/135,689.28 = 58,058.88/x
  3. Step 3: Cross multiply
    98,321.76x = 135,689.28 × 58,058.88
  4. Step 4: Simplify right side
    98,321.76x = 7,877,967,624.81
  5. Step 5: Solve for x
    x = 7,877,967,624.81/98,321.76
  6. Step 6: Final answer
    x = 80,124.36

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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.