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Finding the Fourth Proportional to 116,318.73, 160,510.92 and 65,315.16

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Solution

The fourth proportional to 116,318.73, 160,510.92 and 65,315.16 is: 90,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,318.73 : 160,510.92 = 65,315.16 : x
  2. Step 2: Convert to fraction form
    116,318.73/160,510.92 = 65,315.16/x
  3. Step 3: Cross multiply
    116,318.73x = 160,510.92 × 65,315.16
  4. Step 4: Simplify right side
    116,318.73x = 10,483,796,176.62
  5. Step 5: Solve for x
    x = 10,483,796,176.62/116,318.73
  6. Step 6: Final answer
    x = 90,129.90

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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.