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Finding the Fourth Proportional to 74,675.71, 103,043.58 and 42,410.12

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Solution

The fourth proportional to 74,675.71, 103,043.58 and 42,410.12 is: 58,520.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,675.71 : 103,043.58 = 42,410.12 : x
  2. Step 2: Convert to fraction form
    74,675.71/103,043.58 = 42,410.12/x
  3. Step 3: Cross multiply
    74,675.71x = 103,043.58 × 42,410.12
  4. Step 4: Simplify right side
    74,675.71x = 4,370,090,593.03
  5. Step 5: Solve for x
    x = 4,370,090,593.03/74,675.71
  6. Step 6: Final answer
    x = 58,520.91

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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.