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Finding the Fourth Proportional to 71,607.50, 98,844.81 and 61,495.19

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Solution

The fourth proportional to 71,607.50, 98,844.81 and 61,495.19 is: 84,886.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,607.50 : 98,844.81 = 61,495.19 : x
  2. Step 2: Convert to fraction form
    71,607.50/98,844.81 = 61,495.19/x
  3. Step 3: Cross multiply
    71,607.50x = 98,844.81 × 61,495.19
  4. Step 4: Simplify right side
    71,607.50x = 6,078,480,371.46
  5. Step 5: Solve for x
    x = 6,078,480,371.46/71,607.50
  6. Step 6: Final answer
    x = 84,886.09

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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.