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Finding the Fourth Proportional to 98,802.36, 136,347.60 and 53,480.88

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Solution

The fourth proportional to 98,802.36, 136,347.60 and 53,480.88 is: 73,803.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,802.36 : 136,347.60 = 53,480.88 : x
  2. Step 2: Convert to fraction form
    98,802.36/136,347.60 = 53,480.88/x
  3. Step 3: Cross multiply
    98,802.36x = 136,347.60 × 53,480.88
  4. Step 4: Simplify right side
    98,802.36x = 7,291,990,217.92
  5. Step 5: Solve for x
    x = 7,291,990,217.92/98,802.36
  6. Step 6: Final answer
    x = 73,803.81

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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.