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Finding the Fourth Proportional to 115,920.60, 173,783.70 and 60,516.60

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Solution

The fourth proportional to 115,920.60, 173,783.70 and 60,516.60 is: 90,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,920.60 : 173,783.70 = 60,516.60 : x
  2. Step 2: Convert to fraction form
    115,920.60/173,783.70 = 60,516.60/x
  3. Step 3: Cross multiply
    115,920.60x = 173,783.70 × 60,516.60
  4. Step 4: Simplify right side
    115,920.60x = 10,516,798,659.42
  5. Step 5: Solve for x
    x = 10,516,798,659.42/115,920.60
  6. Step 6: Final answer
    x = 90,724.16

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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.