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Finding the Fourth Proportional to 191,002.78, 286,528.78 and 57,859.59

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Solution

The fourth proportional to 191,002.78, 286,528.78 and 57,859.59 is: 86,796.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,002.78 : 286,528.78 = 57,859.59 : x
  2. Step 2: Convert to fraction form
    191,002.78/286,528.78 = 57,859.59/x
  3. Step 3: Cross multiply
    191,002.78x = 286,528.78 × 57,859.59
  4. Step 4: Simplify right side
    191,002.78x = 16,578,437,993.58
  5. Step 5: Solve for x
    x = 16,578,437,993.58/191,002.78
  6. Step 6: Final answer
    x = 86,796.84

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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.