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Finding the Fourth Proportional to 74,492.20, 111,608.70 and 62,828.20

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Solution

The fourth proportional to 74,492.20, 111,608.70 and 62,828.20 is: 94,132.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,492.20 : 111,608.70 = 62,828.20 : x
  2. Step 2: Convert to fraction form
    74,492.20/111,608.70 = 62,828.20/x
  3. Step 3: Cross multiply
    74,492.20x = 111,608.70 × 62,828.20
  4. Step 4: Simplify right side
    74,492.20x = 7,012,173,725.34
  5. Step 5: Solve for x
    x = 7,012,173,725.34/74,492.20
  6. Step 6: Final answer
    x = 94,132.99

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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.