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Finding the Fourth Proportional to 86,016,657.80, 129,024,986.70 and 22,191,249.80

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Solution

The fourth proportional to 86,016,657.80, 129,024,986.70 and 22,191,249.80 is: 33,286,874.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,016,657.80 : 129,024,986.70 = 22,191,249.80 : x
  2. Step 2: Convert to fraction form
    86,016,657.80/129,024,986.70 = 22,191,249.80/x
  3. Step 3: Cross multiply
    86,016,657.80x = 129,024,986.70 × 22,191,249.80
  4. Step 4: Simplify right side
    86,016,657.80x = 2,863,225,710,301,378
  5. Step 5: Solve for x
    x = 2,863,225,710,301,378/86,016,657.80
  6. Step 6: Final answer
    x = 33,286,874.70

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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.