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Finding the Fourth Proportional to 98,907.75, 148,380.66 and 39,748.32

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Solution

The fourth proportional to 98,907.75, 148,380.66 and 39,748.32 is: 59,630.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,907.75 : 148,380.66 = 39,748.32 : x
  2. Step 2: Convert to fraction form
    98,907.75/148,380.66 = 39,748.32/x
  3. Step 3: Cross multiply
    98,907.75x = 148,380.66 × 39,748.32
  4. Step 4: Simplify right side
    98,907.75x = 5,897,881,955.49
  5. Step 5: Solve for x
    x = 5,897,881,955.49/98,907.75
  6. Step 6: Final answer
    x = 59,630.13

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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.