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Finding the Fourth Proportional to 74,643.48, 103,003.32 and 41,109.48

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Solution

The fourth proportional to 74,643.48, 103,003.32 and 41,109.48 is: 56,728.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,643.48 : 103,003.32 = 41,109.48 : x
  2. Step 2: Convert to fraction form
    74,643.48/103,003.32 = 41,109.48/x
  3. Step 3: Cross multiply
    74,643.48x = 103,003.32 × 41,109.48
  4. Step 4: Simplify right side
    74,643.48x = 4,234,412,923.47
  5. Step 5: Solve for x
    x = 4,234,412,923.47/74,643.48
  6. Step 6: Final answer
    x = 56,728.50

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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.