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Finding the Fourth Proportional to 86,807.88, 130,222.23 and 30,636.39

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Solution

The fourth proportional to 86,807.88, 130,222.23 and 30,636.39 is: 45,958.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,807.88 : 130,222.23 = 30,636.39 : x
  2. Step 2: Convert to fraction form
    86,807.88/130,222.23 = 30,636.39/x
  3. Step 3: Cross multiply
    86,807.88x = 130,222.23 × 30,636.39
  4. Step 4: Simplify right side
    86,807.88x = 3,989,539,024.95
  5. Step 5: Solve for x
    x = 3,989,539,024.95/86,807.88
  6. Step 6: Final answer
    x = 45,958.26

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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.