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Finding the Fourth Proportional to 55,706.40, 83,486.70 and 22,399.20

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Solution

The fourth proportional to 55,706.40, 83,486.70 and 22,399.20 is: 33,569.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,706.40 : 83,486.70 = 22,399.20 : x
  2. Step 2: Convert to fraction form
    55,706.40/83,486.70 = 22,399.20/x
  3. Step 3: Cross multiply
    55,706.40x = 83,486.70 × 22,399.20
  4. Step 4: Simplify right side
    55,706.40x = 1,870,035,290.64
  5. Step 5: Solve for x
    x = 1,870,035,290.64/55,706.40
  6. Step 6: Final answer
    x = 33,569.49

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1.5x scale

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.