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Finding the Fourth Proportional to 72,339.99, 99,764.13 and 46,819.74

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Solution

The fourth proportional to 72,339.99, 99,764.13 and 46,819.74 is: 64,569.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,339.99 : 99,764.13 = 46,819.74 : x
  2. Step 2: Convert to fraction form
    72,339.99/99,764.13 = 46,819.74/x
  3. Step 3: Cross multiply
    72,339.99x = 99,764.13 × 46,819.74
  4. Step 4: Simplify right side
    72,339.99x = 4,670,930,627.93
  5. Step 5: Solve for x
    x = 4,670,930,627.93/72,339.99
  6. Step 6: Final answer
    x = 64,569.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.