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Finding the Fourth Proportional to 91,203.40, 136,586.40 and 73,707.40

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Solution

The fourth proportional to 91,203.40, 136,586.40 and 73,707.40 is: 110,384.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,203.40 : 136,586.40 = 73,707.40 : x
  2. Step 2: Convert to fraction form
    91,203.40/136,586.40 = 73,707.40/x
  3. Step 3: Cross multiply
    91,203.40x = 136,586.40 × 73,707.40
  4. Step 4: Simplify right side
    91,203.40x = 10,067,428,419.36
  5. Step 5: Solve for x
    x = 10,067,428,419.36/91,203.40
  6. Step 6: Final answer
    x = 110,384.35

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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.