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Finding the Fourth Proportional to 156,088.70, 233,787.45 and 128,440.70

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Solution

The fourth proportional to 156,088.70, 233,787.45 and 128,440.70 is: 192,376.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,088.70 : 233,787.45 = 128,440.70 : x
  2. Step 2: Convert to fraction form
    156,088.70/233,787.45 = 128,440.70/x
  3. Step 3: Cross multiply
    156,088.70x = 233,787.45 × 128,440.70
  4. Step 4: Simplify right side
    156,088.70x = 30,027,823,729.22
  5. Step 5: Solve for x
    x = 30,027,823,729.22/156,088.70
  6. Step 6: Final answer
    x = 192,376.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.