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Finding the Fourth Proportional to 73,155.16, 100,954.42 and 39,621.16

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Solution

The fourth proportional to 73,155.16, 100,954.42 and 39,621.16 is: 54,677.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,155.16 : 100,954.42 = 39,621.16 : x
  2. Step 2: Convert to fraction form
    73,155.16/100,954.42 = 39,621.16/x
  3. Step 3: Cross multiply
    73,155.16x = 100,954.42 × 39,621.16
  4. Step 4: Simplify right side
    73,155.16x = 3,999,931,227.53
  5. Step 5: Solve for x
    x = 3,999,931,227.53/73,155.16
  6. Step 6: Final answer
    x = 54,677.36

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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.