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Finding the Fourth Proportional to 42,004.90, 63,396.29 and 42,004.90

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Solution

The fourth proportional to 42,004.90, 63,396.29 and 42,004.90 is: 63,396.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,004.90 : 63,396.29 = 42,004.90 : x
  2. Step 2: Convert to fraction form
    42,004.90/63,396.29 = 42,004.90/x
  3. Step 3: Cross multiply
    42,004.90x = 63,396.29 × 42,004.90
  4. Step 4: Simplify right side
    42,004.90x = 2,662,954,821.82
  5. Step 5: Solve for x
    x = 2,662,954,821.82/42,004.90
  6. Step 6: Final answer
    x = 63,396.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.