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Finding the Fourth Proportional to 75,649.42, 104,395.32 and 41,657.20

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Solution

The fourth proportional to 75,649.42, 104,395.32 and 41,657.20 is: 57,486.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,649.42 : 104,395.32 = 41,657.20 : x
  2. Step 2: Convert to fraction form
    75,649.42/104,395.32 = 41,657.20/x
  3. Step 3: Cross multiply
    75,649.42x = 104,395.32 × 41,657.20
  4. Step 4: Simplify right side
    75,649.42x = 4,348,816,724.30
  5. Step 5: Solve for x
    x = 4,348,816,724.30/75,649.42
  6. Step 6: Final answer
    x = 57,486.45

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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.