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Finding the Fourth Proportional to 73,016.55, 100,784.40 and 42,808.41

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Solution

The fourth proportional to 73,016.55, 100,784.40 and 42,808.41 is: 59,088.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,016.55 : 100,784.40 = 42,808.41 : x
  2. Step 2: Convert to fraction form
    73,016.55/100,784.40 = 42,808.41/x
  3. Step 3: Cross multiply
    73,016.55x = 100,784.40 × 42,808.41
  4. Step 4: Simplify right side
    73,016.55x = 4,314,419,916.80
  5. Step 5: Solve for x
    x = 4,314,419,916.80/73,016.55
  6. Step 6: Final answer
    x = 59,088.25

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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.