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Finding the Fourth Proportional to 172,581, 258,497.58 and 83,648.46

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Solution

The fourth proportional to 172,581, 258,497.58 and 83,648.46 is: 125,291.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,581 : 258,497.58 = 83,648.46 : x
  2. Step 2: Convert to fraction form
    172,581/258,497.58 = 83,648.46/x
  3. Step 3: Cross multiply
    172,581x = 258,497.58 × 83,648.46
  4. Step 4: Simplify right side
    172,581x = 21,622,924,480.73
  5. Step 5: Solve for x
    x = 21,622,924,480.73/172,581
  6. Step 6: Final answer
    x = 125,291.45

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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.