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Finding the Fourth Proportional to 191,892.48, 287,859.20 and 51,653.12

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Solution

The fourth proportional to 191,892.48, 287,859.20 and 51,653.12 is: 77,485.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,892.48 : 287,859.20 = 51,653.12 : x
  2. Step 2: Convert to fraction form
    191,892.48/287,859.20 = 51,653.12/x
  3. Step 3: Cross multiply
    191,892.48x = 287,859.20 × 51,653.12
  4. Step 4: Simplify right side
    191,892.48x = 14,868,825,800.70
  5. Step 5: Solve for x
    x = 14,868,825,800.70/191,892.48
  6. Step 6: Final answer
    x = 77,485.19

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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.