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Finding the Fourth Proportional to 156,281.94, 215,668.21 and 84,663.36

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Solution

The fourth proportional to 156,281.94, 215,668.21 and 84,663.36 is: 116,834.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,281.94 : 215,668.21 = 84,663.36 : x
  2. Step 2: Convert to fraction form
    156,281.94/215,668.21 = 84,663.36/x
  3. Step 3: Cross multiply
    156,281.94x = 215,668.21 × 84,663.36
  4. Step 4: Simplify right side
    156,281.94x = 18,259,195,303.79
  5. Step 5: Solve for x
    x = 18,259,195,303.79/156,281.94
  6. Step 6: Final answer
    x = 116,834.97

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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.