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Finding the Fourth Proportional to 156,957.95, 216,601.47 and 85,338.15

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Solution

The fourth proportional to 156,957.95, 216,601.47 and 85,338.15 is: 117,766.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,957.95 : 216,601.47 = 85,338.15 : x
  2. Step 2: Convert to fraction form
    156,957.95/216,601.47 = 85,338.15/x
  3. Step 3: Cross multiply
    156,957.95x = 216,601.47 × 85,338.15
  4. Step 4: Simplify right side
    156,957.95x = 18,484,368,737.08
  5. Step 5: Solve for x
    x = 18,484,368,737.08/156,957.95
  6. Step 6: Final answer
    x = 117,766.38

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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.