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Finding the Fourth Proportional to 75,553.68, 104,261.94 and 42,019.68

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Solution

The fourth proportional to 75,553.68, 104,261.94 and 42,019.68 is: 57,985.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,553.68 : 104,261.94 = 42,019.68 : x
  2. Step 2: Convert to fraction form
    75,553.68/104,261.94 = 42,019.68/x
  3. Step 3: Cross multiply
    75,553.68x = 104,261.94 × 42,019.68
  4. Step 4: Simplify right side
    75,553.68x = 4,381,053,354.98
  5. Step 5: Solve for x
    x = 4,381,053,354.98/75,553.68
  6. Step 6: Final answer
    x = 57,985.97

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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.