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Finding the Fourth Proportional to 519,074.80, 778,830.90 and 282,587.20

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Solution

The fourth proportional to 519,074.80, 778,830.90 and 282,587.20 is: 423,999.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,074.80 : 778,830.90 = 282,587.20 : x
  2. Step 2: Convert to fraction form
    519,074.80/778,830.90 = 282,587.20/x
  3. Step 3: Cross multiply
    519,074.80x = 778,830.90 × 282,587.20
  4. Step 4: Simplify right side
    519,074.80x = 220,087,643,304.48
  5. Step 5: Solve for x
    x = 220,087,643,304.48/519,074.80
  6. Step 6: Final answer
    x = 423,999.86

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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.