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Finding the Fourth Proportional to 86,812.51, 130,223.86 and 33,504.78

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Solution

The fourth proportional to 86,812.51, 130,223.86 and 33,504.78 is: 50,259.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,812.51 : 130,223.86 = 33,504.78 : x
  2. Step 2: Convert to fraction form
    86,812.51/130,223.86 = 33,504.78/x
  3. Step 3: Cross multiply
    86,812.51x = 130,223.86 × 33,504.78
  4. Step 4: Simplify right side
    86,812.51x = 4,363,121,780.05
  5. Step 5: Solve for x
    x = 4,363,121,780.05/86,812.51
  6. Step 6: Final answer
    x = 50,259.14

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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.