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Finding the Fourth Proportional to 71,854.80, 107,773.98 and 19,260.18

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Solution

The fourth proportional to 71,854.80, 107,773.98 and 19,260.18 is: 28,888.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,854.80 : 107,773.98 = 19,260.18 : x
  2. Step 2: Convert to fraction form
    71,854.80/107,773.98 = 19,260.18/x
  3. Step 3: Cross multiply
    71,854.80x = 107,773.98 × 19,260.18
  4. Step 4: Simplify right side
    71,854.80x = 2,075,746,254.12
  5. Step 5: Solve for x
    x = 2,075,746,254.12/71,854.80
  6. Step 6: Final answer
    x = 28,888.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.