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Finding the Fourth Proportional to 191,511.60, 287,267.40 and 170,844.45

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Solution

The fourth proportional to 191,511.60, 287,267.40 and 170,844.45 is: 256,266.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,511.60 : 287,267.40 = 170,844.45 : x
  2. Step 2: Convert to fraction form
    191,511.60/287,267.40 = 170,844.45/x
  3. Step 3: Cross multiply
    191,511.60x = 287,267.40 × 170,844.45
  4. Step 4: Simplify right side
    191,511.60x = 49,078,040,955.93
  5. Step 5: Solve for x
    x = 49,078,040,955.93/191,511.60
  6. Step 6: Final answer
    x = 256,266.68

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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.