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Finding the Fourth Proportional to 63,907.72, 88,147.08 and 55,394.64

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Solution

The fourth proportional to 63,907.72, 88,147.08 and 55,394.64 is: 76,405.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,907.72 : 88,147.08 = 55,394.64 : x
  2. Step 2: Convert to fraction form
    63,907.72/88,147.08 = 55,394.64/x
  3. Step 3: Cross multiply
    63,907.72x = 88,147.08 × 55,394.64
  4. Step 4: Simplify right side
    63,907.72x = 4,882,875,763.65
  5. Step 5: Solve for x
    x = 4,882,875,763.65/63,907.72
  6. Step 6: Final answer
    x = 76,405.10

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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.