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Finding the Fourth Proportional to 73,153.76, 100,952.32 and 39,619.76

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Solution

The fourth proportional to 73,153.76, 100,952.32 and 39,619.76 is: 54,675.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,153.76 : 100,952.32 = 39,619.76 : x
  2. Step 2: Convert to fraction form
    73,153.76/100,952.32 = 39,619.76/x
  3. Step 3: Cross multiply
    73,153.76x = 100,952.32 × 39,619.76
  4. Step 4: Simplify right side
    73,153.76x = 3,999,706,689.84
  5. Step 5: Solve for x
    x = 3,999,706,689.84/73,153.76
  6. Step 6: Final answer
    x = 54,675.34

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1.5x scale

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.