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Finding the Fourth Proportional to 63,838.88, 95,698.80 and 21,690.16

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Solution

The fourth proportional to 63,838.88, 95,698.80 and 21,690.16 is: 32,515.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,838.88 : 95,698.80 = 21,690.16 : x
  2. Step 2: Convert to fraction form
    63,838.88/95,698.80 = 21,690.16/x
  3. Step 3: Cross multiply
    63,838.88x = 95,698.80 × 21,690.16
  4. Step 4: Simplify right side
    63,838.88x = 2,075,722,283.81
  5. Step 5: Solve for x
    x = 2,075,722,283.81/63,838.88
  6. Step 6: Final answer
    x = 32,515.02

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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.