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Finding the Fourth Proportional to 191,378.98, 286,366.37 and 159,710.87

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Solution

The fourth proportional to 191,378.98, 286,366.37 and 159,710.87 is: 238,980.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,378.98 : 286,366.37 = 159,710.87 : x
  2. Step 2: Convert to fraction form
    191,378.98/286,366.37 = 159,710.87/x
  3. Step 3: Cross multiply
    191,378.98x = 286,366.37 × 159,710.87
  4. Step 4: Simplify right side
    191,378.98x = 45,735,821,058.89
  5. Step 5: Solve for x
    x = 45,735,821,058.89/191,378.98
  6. Step 6: Final answer
    x = 238,980.38

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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.