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Finding the Fourth Proportional to 55,864.80, 83,797.20 and 53,272.80

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Solution

The fourth proportional to 55,864.80, 83,797.20 and 53,272.80 is: 79,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,864.80 : 83,797.20 = 53,272.80 : x
  2. Step 2: Convert to fraction form
    55,864.80/83,797.20 = 53,272.80/x
  3. Step 3: Cross multiply
    55,864.80x = 83,797.20 × 53,272.80
  4. Step 4: Simplify right side
    55,864.80x = 4,464,111,476.16
  5. Step 5: Solve for x
    x = 4,464,111,476.16/55,864.80
  6. Step 6: Final answer
    x = 79,909.20

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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.