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Finding the Fourth Proportional to 616,240.80, 925,916.40 and 391,708.80

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Solution

The fourth proportional to 616,240.80, 925,916.40 and 391,708.80 is: 588,551.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,240.80 : 925,916.40 = 391,708.80 : x
  2. Step 2: Convert to fraction form
    616,240.80/925,916.40 = 391,708.80/x
  3. Step 3: Cross multiply
    616,240.80x = 925,916.40 × 391,708.80
  4. Step 4: Simplify right side
    616,240.80x = 362,689,601,944.32
  5. Step 5: Solve for x
    x = 362,689,601,944.32/616,240.80
  6. Step 6: Final answer
    x = 588,551.75

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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.