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Finding the Fourth Proportional to 73,032.84, 100,785.42 and 39,498.84

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Solution

The fourth proportional to 73,032.84, 100,785.42 and 39,498.84 is: 54,508.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,032.84 : 100,785.42 = 39,498.84 : x
  2. Step 2: Convert to fraction form
    73,032.84/100,785.42 = 39,498.84/x
  3. Step 3: Cross multiply
    73,032.84x = 100,785.42 × 39,498.84
  4. Step 4: Simplify right side
    73,032.84x = 3,980,907,178.91
  5. Step 5: Solve for x
    x = 3,980,907,178.91/73,032.84
  6. Step 6: Final answer
    x = 54,508.45

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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.