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Finding the Fourth Proportional to 86,661.48, 129,996.84 and 27,501.78

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Solution

The fourth proportional to 86,661.48, 129,996.84 and 27,501.78 is: 41,254.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,661.48 : 129,996.84 = 27,501.78 : x
  2. Step 2: Convert to fraction form
    86,661.48/129,996.84 = 27,501.78/x
  3. Step 3: Cross multiply
    86,661.48x = 129,996.84 × 27,501.78
  4. Step 4: Simplify right side
    86,661.48x = 3,575,144,494.38
  5. Step 5: Solve for x
    x = 3,575,144,494.38/86,661.48
  6. Step 6: Final answer
    x = 41,254.14

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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.