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Finding the Fourth Proportional to 61,805.69, 92,643.89 and 28,547.57

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Solution

The fourth proportional to 61,805.69, 92,643.89 and 28,547.57 is: 42,791.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,805.69 : 92,643.89 = 28,547.57 : x
  2. Step 2: Convert to fraction form
    61,805.69/92,643.89 = 28,547.57/x
  3. Step 3: Cross multiply
    61,805.69x = 92,643.89 × 28,547.57
  4. Step 4: Simplify right side
    61,805.69x = 2,644,757,328.89
  5. Step 5: Solve for x
    x = 2,644,757,328.89/61,805.69
  6. Step 6: Final answer
    x = 42,791.49

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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.