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Finding the Fourth Proportional to 73,130.16, 100,919.88 and 39,596.16

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Solution

The fourth proportional to 73,130.16, 100,919.88 and 39,596.16 is: 54,642.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,130.16 : 100,919.88 = 39,596.16 : x
  2. Step 2: Convert to fraction form
    73,130.16/100,919.88 = 39,596.16/x
  3. Step 3: Cross multiply
    73,130.16x = 100,919.88 × 39,596.16
  4. Step 4: Simplify right side
    73,130.16x = 3,996,039,715.66
  5. Step 5: Solve for x
    x = 3,996,039,715.66/73,130.16
  6. Step 6: Final answer
    x = 54,642.84

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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.