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Finding the Fourth Proportional to 156,957.74, 216,603.26 and 85,339.35

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Solution

The fourth proportional to 156,957.74, 216,603.26 and 85,339.35 is: 117,769.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,957.74 : 216,603.26 = 85,339.35 : x
  2. Step 2: Convert to fraction form
    156,957.74/216,603.26 = 85,339.35/x
  3. Step 3: Cross multiply
    156,957.74x = 216,603.26 × 85,339.35
  4. Step 4: Simplify right side
    156,957.74x = 18,484,780,989.58
  5. Step 5: Solve for x
    x = 18,484,780,989.58/156,957.74
  6. Step 6: Final answer
    x = 117,769.16

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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.