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Finding the Fourth Proportional to 59,988.40, 89,971.60 and 26,680.40

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Solution

The fourth proportional to 59,988.40, 89,971.60 and 26,680.40 is: 40,015.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,988.40 : 89,971.60 = 26,680.40 : x
  2. Step 2: Convert to fraction form
    59,988.40/89,971.60 = 26,680.40/x
  3. Step 3: Cross multiply
    59,988.40x = 89,971.60 × 26,680.40
  4. Step 4: Simplify right side
    59,988.40x = 2,400,478,276.64
  5. Step 5: Solve for x
    x = 2,400,478,276.64/59,988.40
  6. Step 6: Final answer
    x = 40,015.71

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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.