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Finding the Fourth Proportional to 91,259.16, 136,698 and 73,393.20

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Solution

The fourth proportional to 91,259.16, 136,698 and 73,393.20 is: 109,936.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,259.16 : 136,698 = 73,393.20 : x
  2. Step 2: Convert to fraction form
    91,259.16/136,698 = 73,393.20/x
  3. Step 3: Cross multiply
    91,259.16x = 136,698 × 73,393.20
  4. Step 4: Simplify right side
    91,259.16x = 10,032,703,653.60
  5. Step 5: Solve for x
    x = 10,032,703,653.60/91,259.16
  6. Step 6: Final answer
    x = 109,936.40

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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.