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Finding the Fourth Proportional to 61,878.48, 92,800.71 and 30,272.28

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Solution

The fourth proportional to 61,878.48, 92,800.71 and 30,272.28 is: 45,400.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,878.48 : 92,800.71 = 30,272.28 : x
  2. Step 2: Convert to fraction form
    61,878.48/92,800.71 = 30,272.28/x
  3. Step 3: Cross multiply
    61,878.48x = 92,800.71 × 30,272.28
  4. Step 4: Simplify right side
    61,878.48x = 2,809,289,077.32
  5. Step 5: Solve for x
    x = 2,809,289,077.32/61,878.48
  6. Step 6: Final answer
    x = 45,400.10

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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.