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Finding the Fourth Proportional to 156,689.54, 216,325.80 and 147,722.84

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Solution

The fourth proportional to 156,689.54, 216,325.80 and 147,722.84 is: 203,946.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,689.54 : 216,325.80 = 147,722.84 : x
  2. Step 2: Convert to fraction form
    156,689.54/216,325.80 = 147,722.84/x
  3. Step 3: Cross multiply
    156,689.54x = 216,325.80 × 147,722.84
  4. Step 4: Simplify right side
    156,689.54x = 31,956,261,541.27
  5. Step 5: Solve for x
    x = 31,956,261,541.27/156,689.54
  6. Step 6: Final answer
    x = 203,946.36

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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.