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Finding the Fourth Proportional to 86,065.79, 129,119.43 and 29,897.73

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Solution

The fourth proportional to 86,065.79, 129,119.43 and 29,897.73 is: 44,853.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,065.79 : 129,119.43 = 29,897.73 : x
  2. Step 2: Convert to fraction form
    86,065.79/129,119.43 = 29,897.73/x
  3. Step 3: Cross multiply
    86,065.79x = 129,119.43 × 29,897.73
  4. Step 4: Simplify right side
    86,065.79x = 3,860,377,968.01
  5. Step 5: Solve for x
    x = 3,860,377,968.01/86,065.79
  6. Step 6: Final answer
    x = 44,853.81

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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.