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Finding the Fourth Proportional to 60,547.36, 90,817.36 and 28,979.88

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Solution

The fourth proportional to 60,547.36, 90,817.36 and 28,979.88 is: 43,468.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,547.36 : 90,817.36 = 28,979.88 : x
  2. Step 2: Convert to fraction form
    60,547.36/90,817.36 = 28,979.88/x
  3. Step 3: Cross multiply
    60,547.36x = 90,817.36 × 28,979.88
  4. Step 4: Simplify right side
    60,547.36x = 2,631,876,194.72
  5. Step 5: Solve for x
    x = 2,631,876,194.72/60,547.36
  6. Step 6: Final answer
    x = 43,468.06

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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.