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Finding the Fourth Proportional to 86,303.34, 129,289.14 and 52,926.06

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Solution

The fourth proportional to 86,303.34, 129,289.14 and 52,926.06 is: 79,287.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,303.34 : 129,289.14 = 52,926.06 : x
  2. Step 2: Convert to fraction form
    86,303.34/129,289.14 = 52,926.06/x
  3. Step 3: Cross multiply
    86,303.34x = 129,289.14 × 52,926.06
  4. Step 4: Simplify right side
    86,303.34x = 6,842,764,780.99
  5. Step 5: Solve for x
    x = 6,842,764,780.99/86,303.34
  6. Step 6: Final answer
    x = 79,287.37

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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.