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Finding the Fourth Proportional to 52,473.78, 78,699.60 and 19,209.42

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Solution

The fourth proportional to 52,473.78, 78,699.60 and 19,209.42 is: 28,810.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,473.78 : 78,699.60 = 19,209.42 : x
  2. Step 2: Convert to fraction form
    52,473.78/78,699.60 = 19,209.42/x
  3. Step 3: Cross multiply
    52,473.78x = 78,699.60 × 19,209.42
  4. Step 4: Simplify right side
    52,473.78x = 1,511,773,670.23
  5. Step 5: Solve for x
    x = 1,511,773,670.23/52,473.78
  6. Step 6: Final answer
    x = 28,810.08

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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.