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Finding the Fourth Proportional to 583,451.20, 875,176.80 and 140,219.20

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Solution

The fourth proportional to 583,451.20, 875,176.80 and 140,219.20 is: 210,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,451.20 : 875,176.80 = 140,219.20 : x
  2. Step 2: Convert to fraction form
    583,451.20/875,176.80 = 140,219.20/x
  3. Step 3: Cross multiply
    583,451.20x = 875,176.80 × 140,219.20
  4. Step 4: Simplify right side
    583,451.20x = 122,716,590,754.56
  5. Step 5: Solve for x
    x = 122,716,590,754.56/583,451.20
  6. Step 6: Final answer
    x = 210,328.80

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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.