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Finding the Fourth Proportional to 87,608.48, 120,904.72 and 54,075.04

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Solution

The fourth proportional to 87,608.48, 120,904.72 and 54,075.04 is: 74,626.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,608.48 : 120,904.72 = 54,075.04 : x
  2. Step 2: Convert to fraction form
    87,608.48/120,904.72 = 54,075.04/x
  3. Step 3: Cross multiply
    87,608.48x = 120,904.72 × 54,075.04
  4. Step 4: Simplify right side
    87,608.48x = 6,537,927,570.19
  5. Step 5: Solve for x
    x = 6,537,927,570.19/87,608.48
  6. Step 6: Final answer
    x = 74,626.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.