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Finding the Fourth Proportional to 397,133.15, 548,123.45 and 235,957.17

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Solution

The fourth proportional to 397,133.15, 548,123.45 and 235,957.17 is: 325,668.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,133.15 : 548,123.45 = 235,957.17 : x
  2. Step 2: Convert to fraction form
    397,133.15/548,123.45 = 235,957.17/x
  3. Step 3: Cross multiply
    397,133.15x = 548,123.45 × 235,957.17
  4. Step 4: Simplify right side
    397,133.15x = 129,333,656,892.85
  5. Step 5: Solve for x
    x = 129,333,656,892.85/397,133.15
  6. Step 6: Final answer
    x = 325,668.25

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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.