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Finding the Fourth Proportional to 48,774.90, 73,118.55 and 19,212.90

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Solution

The fourth proportional to 48,774.90, 73,118.55 and 19,212.90 is: 28,802.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,774.90 : 73,118.55 = 19,212.90 : x
  2. Step 2: Convert to fraction form
    48,774.90/73,118.55 = 19,212.90/x
  3. Step 3: Cross multiply
    48,774.90x = 73,118.55 × 19,212.90
  4. Step 4: Simplify right side
    48,774.90x = 1,404,819,389.30
  5. Step 5: Solve for x
    x = 1,404,819,389.30/48,774.90
  6. Step 6: Final answer
    x = 28,802.10

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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.