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Finding the Fourth Proportional to 84,396.90, 116,347.46 and 57,504.90

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Solution

The fourth proportional to 84,396.90, 116,347.46 and 57,504.90 is: 79,274.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,396.90 : 116,347.46 = 57,504.90 : x
  2. Step 2: Convert to fraction form
    84,396.90/116,347.46 = 57,504.90/x
  3. Step 3: Cross multiply
    84,396.90x = 116,347.46 × 57,504.90
  4. Step 4: Simplify right side
    84,396.90x = 6,690,549,052.55
  5. Step 5: Solve for x
    x = 6,690,549,052.55/84,396.90
  6. Step 6: Final answer
    x = 79,274.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.