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Finding the Fourth Proportional to 98,717.61, 136,230.32 and 53,395.61

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Solution

The fourth proportional to 98,717.61, 136,230.32 and 53,395.61 is: 73,685.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,717.61 : 136,230.32 = 53,395.61 : x
  2. Step 2: Convert to fraction form
    98,717.61/136,230.32 = 53,395.61/x
  3. Step 3: Cross multiply
    98,717.61x = 136,230.32 × 53,395.61
  4. Step 4: Simplify right side
    98,717.61x = 7,274,100,088.77
  5. Step 5: Solve for x
    x = 7,274,100,088.77/98,717.61
  6. Step 6: Final answer
    x = 73,685.94

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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.