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Finding the Fourth Proportional to 118,580.55, 177,870.89 and 48,459.79

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Solution

The fourth proportional to 118,580.55, 177,870.89 and 48,459.79 is: 72,689.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,580.55 : 177,870.89 = 48,459.79 : x
  2. Step 2: Convert to fraction form
    118,580.55/177,870.89 = 48,459.79/x
  3. Step 3: Cross multiply
    118,580.55x = 177,870.89 × 48,459.79
  4. Step 4: Simplify right side
    118,580.55x = 8,619,585,976.51
  5. Step 5: Solve for x
    x = 8,619,585,976.51/118,580.55
  6. Step 6: Final answer
    x = 72,689.71

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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.