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Finding the Fourth Proportional to 116,888.90, 161,308.41 and 66,586.82

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Solution

The fourth proportional to 116,888.90, 161,308.41 and 66,586.82 is: 91,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,888.90 : 161,308.41 = 66,586.82 : x
  2. Step 2: Convert to fraction form
    116,888.90/161,308.41 = 66,586.82/x
  3. Step 3: Cross multiply
    116,888.90x = 161,308.41 × 66,586.82
  4. Step 4: Simplify right side
    116,888.90x = 10,741,014,061.16
  5. Step 5: Solve for x
    x = 10,741,014,061.16/116,888.90
  6. Step 6: Final answer
    x = 91,890.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.