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Finding the Fourth Proportional to 12,363.75, 18,547.95 and 4,968.80

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Solution

The fourth proportional to 12,363.75, 18,547.95 and 4,968.80 is: 7,454.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,363.75 : 18,547.95 = 4,968.80 : x
  2. Step 2: Convert to fraction form
    12,363.75/18,547.95 = 4,968.80/x
  3. Step 3: Cross multiply
    12,363.75x = 18,547.95 × 4,968.80
  4. Step 4: Simplify right side
    12,363.75x = 92,160,961.22
  5. Step 5: Solve for x
    x = 92,160,961.22/12,363.75
  6. Step 6: Final answer
    x = 7,454.13

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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.