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Finding the Fourth Proportional to 22,281.80, 33,368.70 and 11,870.60

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Solution

The fourth proportional to 22,281.80, 33,368.70 and 11,870.60 is: 17,777.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,281.80 : 33,368.70 = 11,870.60 : x
  2. Step 2: Convert to fraction form
    22,281.80/33,368.70 = 11,870.60/x
  3. Step 3: Cross multiply
    22,281.80x = 33,368.70 × 11,870.60
  4. Step 4: Simplify right side
    22,281.80x = 396,106,490.22
  5. Step 5: Solve for x
    x = 396,106,490.22/22,281.80
  6. Step 6: Final answer
    x = 17,777.13

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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.