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Finding the Fourth Proportional to 172,187.31, 258,283.56 and 65,577.16

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Solution

The fourth proportional to 172,187.31, 258,283.56 and 65,577.16 is: 98,366.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,187.31 : 258,283.56 = 65,577.16 : x
  2. Step 2: Convert to fraction form
    172,187.31/258,283.56 = 65,577.16/x
  3. Step 3: Cross multiply
    172,187.31x = 258,283.56 × 65,577.16
  4. Step 4: Simplify right side
    172,187.31x = 16,937,502,339.49
  5. Step 5: Solve for x
    x = 16,937,502,339.49/172,187.31
  6. Step 6: Final answer
    x = 98,366.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.