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Finding the Fourth Proportional to 98,901.66, 136,484.70 and 53,579.72

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Solution

The fourth proportional to 98,901.66, 136,484.70 and 53,579.72 is: 73,940.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,901.66 : 136,484.70 = 53,579.72 : x
  2. Step 2: Convert to fraction form
    98,901.66/136,484.70 = 53,579.72/x
  3. Step 3: Cross multiply
    98,901.66x = 136,484.70 × 53,579.72
  4. Step 4: Simplify right side
    98,901.66x = 7,312,812,010.28
  5. Step 5: Solve for x
    x = 7,312,812,010.28/98,901.66
  6. Step 6: Final answer
    x = 73,940.24

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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.