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Finding the Fourth Proportional to 57,870.60, 86,834.70 and 22,811.40

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Solution

The fourth proportional to 57,870.60, 86,834.70 and 22,811.40 is: 34,228.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,870.60 : 86,834.70 = 22,811.40 : x
  2. Step 2: Convert to fraction form
    57,870.60/86,834.70 = 22,811.40/x
  3. Step 3: Cross multiply
    57,870.60x = 86,834.70 × 22,811.40
  4. Step 4: Simplify right side
    57,870.60x = 1,980,821,075.58
  5. Step 5: Solve for x
    x = 1,980,821,075.58/57,870.60
  6. Step 6: Final answer
    x = 34,228.45

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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.