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Finding the Fourth Proportional to 86,655.51, 129,983.72 and 26,683.25

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Solution

The fourth proportional to 86,655.51, 129,983.72 and 26,683.25 is: 40,025.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,655.51 : 129,983.72 = 26,683.25 : x
  2. Step 2: Convert to fraction form
    86,655.51/129,983.72 = 26,683.25/x
  3. Step 3: Cross multiply
    86,655.51x = 129,983.72 × 26,683.25
  4. Step 4: Simplify right side
    86,655.51x = 3,468,387,313.36
  5. Step 5: Solve for x
    x = 3,468,387,313.36/86,655.51
  6. Step 6: Final answer
    x = 40,025.01

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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.