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Finding the Fourth Proportional to 53,278.99, 79,850.61 and 28,330.99

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Solution

The fourth proportional to 53,278.99, 79,850.61 and 28,330.99 is: 42,460.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,278.99 : 79,850.61 = 28,330.99 : x
  2. Step 2: Convert to fraction form
    53,278.99/79,850.61 = 28,330.99/x
  3. Step 3: Cross multiply
    53,278.99x = 79,850.61 × 28,330.99
  4. Step 4: Simplify right side
    53,278.99x = 2,262,246,633.78
  5. Step 5: Solve for x
    x = 2,262,246,633.78/53,278.99
  6. Step 6: Final answer
    x = 42,460.39

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1.5x scale

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.