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Finding the Fourth Proportional to 625,424.63, 863,178.63 and 396,003.24

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Solution

The fourth proportional to 625,424.63, 863,178.63 and 396,003.24 is: 546,543.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,424.63 : 863,178.63 = 396,003.24 : x
  2. Step 2: Convert to fraction form
    625,424.63/863,178.63 = 396,003.24/x
  3. Step 3: Cross multiply
    625,424.63x = 863,178.63 × 396,003.24
  4. Step 4: Simplify right side
    625,424.63x = 341,821,534,178.76
  5. Step 5: Solve for x
    x = 341,821,534,178.76/625,424.63
  6. Step 6: Final answer
    x = 546,543.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.