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Finding the Fourth Proportional to 107,853.36, 148,794.48 and 65,396.40

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Solution

The fourth proportional to 107,853.36, 148,794.48 and 65,396.40 is: 90,220.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,853.36 : 148,794.48 = 65,396.40 : x
  2. Step 2: Convert to fraction form
    107,853.36/148,794.48 = 65,396.40/x
  3. Step 3: Cross multiply
    107,853.36x = 148,794.48 × 65,396.40
  4. Step 4: Simplify right side
    107,853.36x = 9,730,623,331.87
  5. Step 5: Solve for x
    x = 9,730,623,331.87/107,853.36
  6. Step 6: Final answer
    x = 90,220.86

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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.