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Finding the Fourth Proportional to 433,397.40, 649,901.70 and 196,618.20

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Solution

The fourth proportional to 433,397.40, 649,901.70 and 196,618.20 is: 294,839.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,397.40 : 649,901.70 = 196,618.20 : x
  2. Step 2: Convert to fraction form
    433,397.40/649,901.70 = 196,618.20/x
  3. Step 3: Cross multiply
    433,397.40x = 649,901.70 × 196,618.20
  4. Step 4: Simplify right side
    433,397.40x = 127,782,502,430.94
  5. Step 5: Solve for x
    x = 127,782,502,430.94/433,397.40
  6. Step 6: Final answer
    x = 294,839.11

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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.