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Finding the Fourth Proportional to 156,277.92, 215,663.76 and 84,658.56

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Solution

The fourth proportional to 156,277.92, 215,663.76 and 84,658.56 is: 116,828.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,277.92 : 215,663.76 = 84,658.56 : x
  2. Step 2: Convert to fraction form
    156,277.92/215,663.76 = 84,658.56/x
  3. Step 3: Cross multiply
    156,277.92x = 215,663.76 × 84,658.56
  4. Step 4: Simplify right side
    156,277.92x = 18,257,783,365.79
  5. Step 5: Solve for x
    x = 18,257,783,365.79/156,277.92
  6. Step 6: Final answer
    x = 116,828.94

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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.