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Finding the Fourth Proportional to 52,261, 78,339.66 and 28,898.44

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Solution

The fourth proportional to 52,261, 78,339.66 and 28,898.44 is: 43,318.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,261 : 78,339.66 = 28,898.44 : x
  2. Step 2: Convert to fraction form
    52,261/78,339.66 = 28,898.44/x
  3. Step 3: Cross multiply
    52,261x = 78,339.66 × 28,898.44
  4. Step 4: Simplify right side
    52,261x = 2,263,893,964.13
  5. Step 5: Solve for x
    x = 2,263,893,964.13/52,261
  6. Step 6: Final answer
    x = 43,318.99

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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.