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Finding the Fourth Proportional to 86,465.70, 129,653.67 and 33,141.93

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Solution

The fourth proportional to 86,465.70, 129,653.67 and 33,141.93 is: 49,695.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,465.70 : 129,653.67 = 33,141.93 : x
  2. Step 2: Convert to fraction form
    86,465.70/129,653.67 = 33,141.93/x
  3. Step 3: Cross multiply
    86,465.70x = 129,653.67 × 33,141.93
  4. Step 4: Simplify right side
    86,465.70x = 4,296,972,855.38
  5. Step 5: Solve for x
    x = 4,296,972,855.38/86,465.70
  6. Step 6: Final answer
    x = 49,695.69

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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.