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Finding the Fourth Proportional to 118,010.80, 177,016.20 and 76,020.40

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Solution

The fourth proportional to 118,010.80, 177,016.20 and 76,020.40 is: 114,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,010.80 : 177,016.20 = 76,020.40 : x
  2. Step 2: Convert to fraction form
    118,010.80/177,016.20 = 76,020.40/x
  3. Step 3: Cross multiply
    118,010.80x = 177,016.20 × 76,020.40
  4. Step 4: Simplify right side
    118,010.80x = 13,456,842,330.48
  5. Step 5: Solve for x
    x = 13,456,842,330.48/118,010.80
  6. Step 6: Final answer
    x = 114,030.60

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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.