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Finding the Fourth Proportional to 190,892.81, 286,212.85 and 91,068.41

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Solution

The fourth proportional to 190,892.81, 286,212.85 and 91,068.41 is: 136,542.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,892.81 : 286,212.85 = 91,068.41 : x
  2. Step 2: Convert to fraction form
    190,892.81/286,212.85 = 91,068.41/x
  3. Step 3: Cross multiply
    190,892.81x = 286,212.85 × 91,068.41
  4. Step 4: Simplify right side
    190,892.81x = 26,064,949,658.93
  5. Step 5: Solve for x
    x = 26,064,949,658.93/190,892.81
  6. Step 6: Final answer
    x = 136,542.33

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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.