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Finding the Fourth Proportional to 93,693.04, 129,349.84 and 61,954

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Solution

The fourth proportional to 93,693.04, 129,349.84 and 61,954 is: 85,531.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,693.04 : 129,349.84 = 61,954 : x
  2. Step 2: Convert to fraction form
    93,693.04/129,349.84 = 61,954/x
  3. Step 3: Cross multiply
    93,693.04x = 129,349.84 × 61,954
  4. Step 4: Simplify right side
    93,693.04x = 8,013,739,987.36
  5. Step 5: Solve for x
    x = 8,013,739,987.36/93,693.04
  6. Step 6: Final answer
    x = 85,531.86

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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.