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Finding the Fourth Proportional to 430,007.40, 644,816.70 and 193,228.20

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Solution

The fourth proportional to 430,007.40, 644,816.70 and 193,228.20 is: 289,754.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,007.40 : 644,816.70 = 193,228.20 : x
  2. Step 2: Convert to fraction form
    430,007.40/644,816.70 = 193,228.20/x
  3. Step 3: Cross multiply
    430,007.40x = 644,816.70 × 193,228.20
  4. Step 4: Simplify right side
    430,007.40x = 124,596,770,270.94
  5. Step 5: Solve for x
    x = 124,596,770,270.94/430,007.40
  6. Step 6: Final answer
    x = 289,754.94

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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.