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Finding the Fourth Proportional to 311,957.55, 430,501.41 and 168,717.59

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Solution

The fourth proportional to 311,957.55, 430,501.41 and 168,717.59 is: 232,830.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,957.55 : 430,501.41 = 168,717.59 : x
  2. Step 2: Convert to fraction form
    311,957.55/430,501.41 = 168,717.59/x
  3. Step 3: Cross multiply
    311,957.55x = 430,501.41 × 168,717.59
  4. Step 4: Simplify right side
    311,957.55x = 72,633,160,386.80
  5. Step 5: Solve for x
    x = 72,633,160,386.80/311,957.55
  6. Step 6: Final answer
    x = 232,830.27

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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.