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Finding the Fourth Proportional to 98,908.65, 136,493.75 and 53,587.77

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Solution

The fourth proportional to 98,908.65, 136,493.75 and 53,587.77 is: 73,951.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,908.65 : 136,493.75 = 53,587.77 : x
  2. Step 2: Convert to fraction form
    98,908.65/136,493.75 = 53,587.77/x
  3. Step 3: Cross multiply
    98,908.65x = 136,493.75 × 53,587.77
  4. Step 4: Simplify right side
    98,908.65x = 7,314,395,413.50
  5. Step 5: Solve for x
    x = 7,314,395,413.50/98,908.65
  6. Step 6: Final answer
    x = 73,951.02

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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.