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Finding the Fourth Proportional to 32,860.76, 49,307.70 and 13,145

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Solution

The fourth proportional to 32,860.76, 49,307.70 and 13,145 is: 19,724.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,860.76 : 49,307.70 = 13,145 : x
  2. Step 2: Convert to fraction form
    32,860.76/49,307.70 = 13,145/x
  3. Step 3: Cross multiply
    32,860.76x = 49,307.70 × 13,145
  4. Step 4: Simplify right side
    32,860.76x = 648,149,716.50
  5. Step 5: Solve for x
    x = 648,149,716.50/32,860.76
  6. Step 6: Final answer
    x = 19,724.12

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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.