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Finding the Fourth Proportional to 156,859.52, 216,461.76 and 85,237.16

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Solution

The fourth proportional to 156,859.52, 216,461.76 and 85,237.16 is: 117,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,859.52 : 216,461.76 = 85,237.16 : x
  2. Step 2: Convert to fraction form
    156,859.52/216,461.76 = 85,237.16/x
  3. Step 3: Cross multiply
    156,859.52x = 216,461.76 × 85,237.16
  4. Step 4: Simplify right side
    156,859.52x = 18,450,585,671.00
  5. Step 5: Solve for x
    x = 18,450,585,671.00/156,859.52
  6. Step 6: Final answer
    x = 117,624.90

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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.