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Finding the Fourth Proportional to 74,619.90, 112,059.45 and 39,627.90

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Solution

The fourth proportional to 74,619.90, 112,059.45 and 39,627.90 is: 59,510.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,619.90 : 112,059.45 = 39,627.90 : x
  2. Step 2: Convert to fraction form
    74,619.90/112,059.45 = 39,627.90/x
  3. Step 3: Cross multiply
    74,619.90x = 112,059.45 × 39,627.90
  4. Step 4: Simplify right side
    74,619.90x = 4,440,680,678.66
  5. Step 5: Solve for x
    x = 4,440,680,678.66/74,619.90
  6. Step 6: Final answer
    x = 59,510.68

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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.