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Finding the Fourth Proportional to 91,814.40, 137,718.36 and 36,410.40

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Solution

The fourth proportional to 91,814.40, 137,718.36 and 36,410.40 is: 54,614.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,814.40 : 137,718.36 = 36,410.40 : x
  2. Step 2: Convert to fraction form
    91,814.40/137,718.36 = 36,410.40/x
  3. Step 3: Cross multiply
    91,814.40x = 137,718.36 × 36,410.40
  4. Step 4: Simplify right side
    91,814.40x = 5,014,380,574.94
  5. Step 5: Solve for x
    x = 5,014,380,574.94/91,814.40
  6. Step 6: Final answer
    x = 54,614.32

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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.