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Finding the Fourth Proportional to 54,860.40, 82,293.30 and 28,616.40

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Solution

The fourth proportional to 54,860.40, 82,293.30 and 28,616.40 is: 42,926.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,860.40 : 82,293.30 = 28,616.40 : x
  2. Step 2: Convert to fraction form
    54,860.40/82,293.30 = 28,616.40/x
  3. Step 3: Cross multiply
    54,860.40x = 82,293.30 × 28,616.40
  4. Step 4: Simplify right side
    54,860.40x = 2,354,937,990.12
  5. Step 5: Solve for x
    x = 2,354,937,990.12/54,860.40
  6. Step 6: Final answer
    x = 42,926.01

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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.