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Finding the Fourth Proportional to 625,764.16, 863,673.60 and 371,255.68

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Solution

The fourth proportional to 625,764.16, 863,673.60 and 371,255.68 is: 512,403.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,764.16 : 863,673.60 = 371,255.68 : x
  2. Step 2: Convert to fraction form
    625,764.16/863,673.60 = 371,255.68/x
  3. Step 3: Cross multiply
    625,764.16x = 863,673.60 × 371,255.68
  4. Step 4: Simplify right side
    625,764.16x = 320,643,729,666.05
  5. Step 5: Solve for x
    x = 320,643,729,666.05/625,764.16
  6. Step 6: Final answer
    x = 512,403.47

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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.