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Finding the Fourth Proportional to 63,907.38, 88,155.54 and 39,992.54

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Solution

The fourth proportional to 63,907.38, 88,155.54 and 39,992.54 is: 55,166.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,907.38 : 88,155.54 = 39,992.54 : x
  2. Step 2: Convert to fraction form
    63,907.38/88,155.54 = 39,992.54/x
  3. Step 3: Cross multiply
    63,907.38x = 88,155.54 × 39,992.54
  4. Step 4: Simplify right side
    63,907.38x = 3,525,563,518.89
  5. Step 5: Solve for x
    x = 3,525,563,518.89/63,907.38
  6. Step 6: Final answer
    x = 55,166.77

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1.5x scale

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.