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Finding the Fourth Proportional to 583,418.50, 875,127.75 and 140,186.50

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Solution

The fourth proportional to 583,418.50, 875,127.75 and 140,186.50 is: 210,279.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,418.50 : 875,127.75 = 140,186.50 : x
  2. Step 2: Convert to fraction form
    583,418.50/875,127.75 = 140,186.50/x
  3. Step 3: Cross multiply
    583,418.50x = 875,127.75 × 140,186.50
  4. Step 4: Simplify right side
    583,418.50x = 122,681,096,325.38
  5. Step 5: Solve for x
    x = 122,681,096,325.38/583,418.50
  6. Step 6: Final answer
    x = 210,279.75

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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.