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Finding the Fourth Proportional to 98,920.80, 136,510.49 and 53,600.01

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Solution

The fourth proportional to 98,920.80, 136,510.49 and 53,600.01 is: 73,967.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,920.80 : 136,510.49 = 53,600.01 : x
  2. Step 2: Convert to fraction form
    98,920.80/136,510.49 = 53,600.01/x
  3. Step 3: Cross multiply
    98,920.80x = 136,510.49 × 53,600.01
  4. Step 4: Simplify right side
    98,920.80x = 7,316,963,580.36
  5. Step 5: Solve for x
    x = 7,316,963,580.36/98,920.80
  6. Step 6: Final answer
    x = 73,967.90

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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.