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Finding the Fourth Proportional to 98,963.86, 136,569.63 and 53,641.66

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Solution

The fourth proportional to 98,963.86, 136,569.63 and 53,641.66 is: 74,025.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,963.86 : 136,569.63 = 53,641.66 : x
  2. Step 2: Convert to fraction form
    98,963.86/136,569.63 = 53,641.66/x
  3. Step 3: Cross multiply
    98,963.86x = 136,569.63 × 53,641.66
  4. Step 4: Simplify right side
    98,963.86x = 7,325,821,658.79
  5. Step 5: Solve for x
    x = 7,325,821,658.79/98,963.86
  6. Step 6: Final answer
    x = 74,025.22

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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.