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Finding the Fourth Proportional to 191,142.60, 263,783.60 and 105,108.13

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Solution

The fourth proportional to 191,142.60, 263,783.60 and 105,108.13 is: 145,052.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,142.60 : 263,783.60 = 105,108.13 : x
  2. Step 2: Convert to fraction form
    191,142.60/263,783.60 = 105,108.13/x
  3. Step 3: Cross multiply
    191,142.60x = 263,783.60 × 105,108.13
  4. Step 4: Simplify right side
    191,142.60x = 27,725,800,920.67
  5. Step 5: Solve for x
    x = 27,725,800,920.67/191,142.60
  6. Step 6: Final answer
    x = 145,052.97

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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.