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Finding the Fourth Proportional to 60,478.60, 90,686.77 and 27,170.08

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Solution

The fourth proportional to 60,478.60, 90,686.77 and 27,170.08 is: 40,741.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,478.60 : 90,686.77 = 27,170.08 : x
  2. Step 2: Convert to fraction form
    60,478.60/90,686.77 = 27,170.08/x
  3. Step 3: Cross multiply
    60,478.60x = 90,686.77 × 27,170.08
  4. Step 4: Simplify right side
    60,478.60x = 2,463,966,795.84
  5. Step 5: Solve for x
    x = 2,463,966,795.84/60,478.60
  6. Step 6: Final answer
    x = 40,741.13

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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.