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Finding the Fourth Proportional to 61,398.14, 84,734.34 and 34,539.05

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Solution

The fourth proportional to 61,398.14, 84,734.34 and 34,539.05 is: 47,666.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,398.14 : 84,734.34 = 34,539.05 : x
  2. Step 2: Convert to fraction form
    61,398.14/84,734.34 = 34,539.05/x
  3. Step 3: Cross multiply
    61,398.14x = 84,734.34 × 34,539.05
  4. Step 4: Simplify right side
    61,398.14x = 2,926,643,605.98
  5. Step 5: Solve for x
    x = 2,926,643,605.98/61,398.14
  6. Step 6: Final answer
    x = 47,666.65

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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.