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Finding the Fourth Proportional to 72,701.99, 109,053.03 and 22,785.98

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Solution

The fourth proportional to 72,701.99, 109,053.03 and 22,785.98 is: 34,178.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,701.99 : 109,053.03 = 22,785.98 : x
  2. Step 2: Convert to fraction form
    72,701.99/109,053.03 = 22,785.98/x
  3. Step 3: Cross multiply
    72,701.99x = 109,053.03 × 22,785.98
  4. Step 4: Simplify right side
    72,701.99x = 2,484,880,160.52
  5. Step 5: Solve for x
    x = 2,484,880,160.52/72,701.99
  6. Step 6: Final answer
    x = 34,178.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.