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Finding the Fourth Proportional to 875,793.60, 1,313,690.40 and 403,401.60

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Solution

The fourth proportional to 875,793.60, 1,313,690.40 and 403,401.60 is: 605,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,793.60 : 1,313,690.40 = 403,401.60 : x
  2. Step 2: Convert to fraction form
    875,793.60/1,313,690.40 = 403,401.60/x
  3. Step 3: Cross multiply
    875,793.60x = 1,313,690.40 × 403,401.60
  4. Step 4: Simplify right side
    875,793.60x = 529,944,809,264.64
  5. Step 5: Solve for x
    x = 529,944,809,264.64/875,793.60
  6. Step 6: Final answer
    x = 605,102.40

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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.