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Finding the Fourth Proportional to 110,808.48, 152,838.08 and 74,982.72

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Solution

The fourth proportional to 110,808.48, 152,838.08 and 74,982.72 is: 103,423.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,808.48 : 152,838.08 = 74,982.72 : x
  2. Step 2: Convert to fraction form
    110,808.48/152,838.08 = 74,982.72/x
  3. Step 3: Cross multiply
    110,808.48x = 152,838.08 × 74,982.72
  4. Step 4: Simplify right side
    110,808.48x = 11,460,214,957.98
  5. Step 5: Solve for x
    x = 11,460,214,957.98/110,808.48
  6. Step 6: Final answer
    x = 103,423.63

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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.