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Finding the Fourth Proportional to 91,892.71, 137,735.75 and 46,787.46

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Solution

The fourth proportional to 91,892.71, 137,735.75 and 46,787.46 is: 70,128.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,892.71 : 137,735.75 = 46,787.46 : x
  2. Step 2: Convert to fraction form
    91,892.71/137,735.75 = 46,787.46/x
  3. Step 3: Cross multiply
    91,892.71x = 137,735.75 × 46,787.46
  4. Step 4: Simplify right side
    91,892.71x = 6,444,305,549.36
  5. Step 5: Solve for x
    x = 6,444,305,549.36/91,892.71
  6. Step 6: Final answer
    x = 70,128.59

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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.