Home / 86,208.26-129,312.38-23,878.76

Finding the Fourth Proportional to 86,208.26, 129,312.38 and 23,878.76

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Solution

The fourth proportional to 86,208.26, 129,312.38 and 23,878.76 is: 35,818.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,208.26 : 129,312.38 = 23,878.76 : x
  2. Step 2: Convert to fraction form
    86,208.26/129,312.38 = 23,878.76/x
  3. Step 3: Cross multiply
    86,208.26x = 129,312.38 × 23,878.76
  4. Step 4: Simplify right side
    86,208.26x = 3,087,819,287.05
  5. Step 5: Solve for x
    x = 3,087,819,287.05/86,208.26
  6. Step 6: Final answer
    x = 35,818.14

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Half scale
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Double scale
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Similar ratio
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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.