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Finding the Fourth Proportional to 71,888.97, 107,669.43 and 63,480

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Solution

The fourth proportional to 71,888.97, 107,669.43 and 63,480 is: 95,075.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,888.97 : 107,669.43 = 63,480 : x
  2. Step 2: Convert to fraction form
    71,888.97/107,669.43 = 63,480/x
  3. Step 3: Cross multiply
    71,888.97x = 107,669.43 × 63,480
  4. Step 4: Simplify right side
    71,888.97x = 6,834,855,416.40
  5. Step 5: Solve for x
    x = 6,834,855,416.40/71,888.97
  6. Step 6: Final answer
    x = 95,075.16

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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.