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Finding the Fourth Proportional to 620,997.52, 931,496.16 and 265,781.20

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Solution

The fourth proportional to 620,997.52, 931,496.16 and 265,781.20 is: 398,671.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,997.52 : 931,496.16 = 265,781.20 : x
  2. Step 2: Convert to fraction form
    620,997.52/931,496.16 = 265,781.20/x
  3. Step 3: Cross multiply
    620,997.52x = 931,496.16 × 265,781.20
  4. Step 4: Simplify right side
    620,997.52x = 247,574,167,200.19
  5. Step 5: Solve for x
    x = 247,574,167,200.19/620,997.52
  6. Step 6: Final answer
    x = 398,671.75

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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.