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Finding the Fourth Proportional to 616,252.05, 925,933.28 and 391,720.05

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Solution

The fourth proportional to 616,252.05, 925,933.28 and 391,720.05 is: 588,568.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,252.05 : 925,933.28 = 391,720.05 : x
  2. Step 2: Convert to fraction form
    616,252.05/925,933.28 = 391,720.05/x
  3. Step 3: Cross multiply
    616,252.05x = 925,933.28 × 391,720.05
  4. Step 4: Simplify right side
    616,252.05x = 362,706,628,779.66
  5. Step 5: Solve for x
    x = 362,706,628,779.66/616,252.05
  6. Step 6: Final answer
    x = 588,568.64

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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.