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Finding the Fourth Proportional to 616,761.15, 925,146.18 and 217,409.28

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Solution

The fourth proportional to 616,761.15, 925,146.18 and 217,409.28 is: 326,115.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,761.15 : 925,146.18 = 217,409.28 : x
  2. Step 2: Convert to fraction form
    616,761.15/925,146.18 = 217,409.28/x
  3. Step 3: Cross multiply
    616,761.15x = 925,146.18 × 217,409.28
  4. Step 4: Simplify right side
    616,761.15x = 201,135,364,888.55
  5. Step 5: Solve for x
    x = 201,135,364,888.55/616,761.15
  6. Step 6: Final answer
    x = 326,115.49

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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.