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Finding the Fourth Proportional to 56,556.40, 84,737.40 and 47,808.40

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Solution

The fourth proportional to 56,556.40, 84,737.40 and 47,808.40 is: 71,630.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,556.40 : 84,737.40 = 47,808.40 : x
  2. Step 2: Convert to fraction form
    56,556.40/84,737.40 = 47,808.40/x
  3. Step 3: Cross multiply
    56,556.40x = 84,737.40 × 47,808.40
  4. Step 4: Simplify right side
    56,556.40x = 4,051,159,514.16
  5. Step 5: Solve for x
    x = 4,051,159,514.16/56,556.40
  6. Step 6: Final answer
    x = 71,630.43

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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.