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Finding the Fourth Proportional to 518,865.80, 778,202.70 and 144,811.40

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Solution

The fourth proportional to 518,865.80, 778,202.70 and 144,811.40 is: 217,190.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,865.80 : 778,202.70 = 144,811.40 : x
  2. Step 2: Convert to fraction form
    518,865.80/778,202.70 = 144,811.40/x
  3. Step 3: Cross multiply
    518,865.80x = 778,202.70 × 144,811.40
  4. Step 4: Simplify right side
    518,865.80x = 112,692,622,470.78
  5. Step 5: Solve for x
    x = 112,692,622,470.78/518,865.80
  6. Step 6: Final answer
    x = 217,190.31

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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.