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Finding the Fourth Proportional to 191,296.66, 263,988.15 and 105,260.89

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Solution

The fourth proportional to 191,296.66, 263,988.15 and 105,260.89 is: 145,259.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,296.66 : 263,988.15 = 105,260.89 : x
  2. Step 2: Convert to fraction form
    191,296.66/263,988.15 = 105,260.89/x
  3. Step 3: Cross multiply
    191,296.66x = 263,988.15 × 105,260.89
  4. Step 4: Simplify right side
    191,296.66x = 27,787,627,618.45
  5. Step 5: Solve for x
    x = 27,787,627,618.45/191,296.66
  6. Step 6: Final answer
    x = 145,259.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.