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Finding the Fourth Proportional to 55,966.80, 83,950.20 and 55,383.60

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Solution

The fourth proportional to 55,966.80, 83,950.20 and 55,383.60 is: 83,075.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,966.80 : 83,950.20 = 55,383.60 : x
  2. Step 2: Convert to fraction form
    55,966.80/83,950.20 = 55,383.60/x
  3. Step 3: Cross multiply
    55,966.80x = 83,950.20 × 55,383.60
  4. Step 4: Simplify right side
    55,966.80x = 4,649,464,296.72
  5. Step 5: Solve for x
    x = 4,649,464,296.72/55,966.80
  6. Step 6: Final answer
    x = 83,075.40

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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.