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Finding the Fourth Proportional to 583,945.60, 875,918.40 and 331,128.40

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Solution

The fourth proportional to 583,945.60, 875,918.40 and 331,128.40 is: 496,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,945.60 : 875,918.40 = 331,128.40 : x
  2. Step 2: Convert to fraction form
    583,945.60/875,918.40 = 331,128.40/x
  3. Step 3: Cross multiply
    583,945.60x = 875,918.40 × 331,128.40
  4. Step 4: Simplify right side
    583,945.60x = 290,041,458,322.56
  5. Step 5: Solve for x
    x = 290,041,458,322.56/583,945.60
  6. Step 6: Final answer
    x = 496,692.60

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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.