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Finding the Fourth Proportional to 191,591.20, 287,386.80 and 168,263.20

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Solution

The fourth proportional to 191,591.20, 287,386.80 and 168,263.20 is: 252,394.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,591.20 : 287,386.80 = 168,263.20 : x
  2. Step 2: Convert to fraction form
    191,591.20/287,386.80 = 168,263.20/x
  3. Step 3: Cross multiply
    191,591.20x = 287,386.80 × 168,263.20
  4. Step 4: Simplify right side
    191,591.20x = 48,356,622,605.76
  5. Step 5: Solve for x
    x = 48,356,622,605.76/191,591.20
  6. Step 6: Final answer
    x = 252,394.80

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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.