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Finding the Fourth Proportional to 583,410.80, 875,116.20 and 209,385.20

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Solution

The fourth proportional to 583,410.80, 875,116.20 and 209,385.20 is: 314,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,410.80 : 875,116.20 = 209,385.20 : x
  2. Step 2: Convert to fraction form
    583,410.80/875,116.20 = 209,385.20/x
  3. Step 3: Cross multiply
    583,410.80x = 875,116.20 × 209,385.20
  4. Step 4: Simplify right side
    583,410.80x = 183,236,380,560.24
  5. Step 5: Solve for x
    x = 183,236,380,560.24/583,410.80
  6. Step 6: Final answer
    x = 314,077.80

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Double scale
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Similar ratio
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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.