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Finding the Fourth Proportional to 173,877.40, 260,718.90 and 74,020.60

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Solution

The fourth proportional to 173,877.40, 260,718.90 and 74,020.60 is: 110,989.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,877.40 : 260,718.90 = 74,020.60 : x
  2. Step 2: Convert to fraction form
    173,877.40/260,718.90 = 74,020.60/x
  3. Step 3: Cross multiply
    173,877.40x = 260,718.90 × 74,020.60
  4. Step 4: Simplify right side
    173,877.40x = 19,298,569,409.34
  5. Step 5: Solve for x
    x = 19,298,569,409.34/173,877.40
  6. Step 6: Final answer
    x = 110,989.52

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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.