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Finding the Fourth Proportional to 72,947.01, 109,244.18 and 60,374.50

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Solution

The fourth proportional to 72,947.01, 109,244.18 and 60,374.50 is: 90,415.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,947.01 : 109,244.18 = 60,374.50 : x
  2. Step 2: Convert to fraction form
    72,947.01/109,244.18 = 60,374.50/x
  3. Step 3: Cross multiply
    72,947.01x = 109,244.18 × 60,374.50
  4. Step 4: Simplify right side
    72,947.01x = 6,595,562,623.24
  5. Step 5: Solve for x
    x = 6,595,562,623.24/72,947.01
  6. Step 6: Final answer
    x = 90,415.80

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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.