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Finding the Fourth Proportional to 867,641.20, 1,301,656.20 and 335,114.80

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Solution

The fourth proportional to 867,641.20, 1,301,656.20 and 335,114.80 is: 502,747.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,641.20 : 1,301,656.20 = 335,114.80 : x
  2. Step 2: Convert to fraction form
    867,641.20/1,301,656.20 = 335,114.80/x
  3. Step 3: Cross multiply
    867,641.20x = 1,301,656.20 × 335,114.80
  4. Step 4: Simplify right side
    867,641.20x = 436,204,257,131.76
  5. Step 5: Solve for x
    x = 436,204,257,131.76/867,641.20
  6. Step 6: Final answer
    x = 502,747.28

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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.