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Finding the Fourth Proportional to 60,291.42, 90,404.01 and 47,890.86

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Solution

The fourth proportional to 60,291.42, 90,404.01 and 47,890.86 is: 71,809.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,291.42 : 90,404.01 = 47,890.86 : x
  2. Step 2: Convert to fraction form
    60,291.42/90,404.01 = 47,890.86/x
  3. Step 3: Cross multiply
    60,291.42x = 90,404.01 × 47,890.86
  4. Step 4: Simplify right side
    60,291.42x = 4,329,525,786.35
  5. Step 5: Solve for x
    x = 4,329,525,786.35/60,291.42
  6. Step 6: Final answer
    x = 71,809.98

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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.