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Finding the Fourth Proportional to 86,130.28, 129,202.80 and 23,800.78

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Solution

The fourth proportional to 86,130.28, 129,202.80 and 23,800.78 is: 35,703.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,130.28 : 129,202.80 = 23,800.78 : x
  2. Step 2: Convert to fraction form
    86,130.28/129,202.80 = 23,800.78/x
  3. Step 3: Cross multiply
    86,130.28x = 129,202.80 × 23,800.78
  4. Step 4: Simplify right side
    86,130.28x = 3,075,127,418.18
  5. Step 5: Solve for x
    x = 3,075,127,418.18/86,130.28
  6. Step 6: Final answer
    x = 35,703.21

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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.