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Finding the Fourth Proportional to 54,609.81, 81,889.59 and 28,332.99

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Solution

The fourth proportional to 54,609.81, 81,889.59 and 28,332.99 is: 42,486.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,609.81 : 81,889.59 = 28,332.99 : x
  2. Step 2: Convert to fraction form
    54,609.81/81,889.59 = 28,332.99/x
  3. Step 3: Cross multiply
    54,609.81x = 81,889.59 × 28,332.99
  4. Step 4: Simplify right side
    54,609.81x = 2,320,176,934.57
  5. Step 5: Solve for x
    x = 2,320,176,934.57/54,609.81
  6. Step 6: Final answer
    x = 42,486.45

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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.