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Finding the Fourth Proportional to 191,886.84, 287,313.66 and 125,161.56

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Solution

The fourth proportional to 191,886.84, 287,313.66 and 125,161.56 is: 187,405.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,886.84 : 287,313.66 = 125,161.56 : x
  2. Step 2: Convert to fraction form
    191,886.84/287,313.66 = 125,161.56/x
  3. Step 3: Cross multiply
    191,886.84x = 287,313.66 × 125,161.56
  4. Step 4: Simplify right side
    191,886.84x = 35,960,625,894.91
  5. Step 5: Solve for x
    x = 35,960,625,894.91/191,886.84
  6. Step 6: Final answer
    x = 187,405.38

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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.