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Finding the Fourth Proportional to 262,189.40, 393,341.70 and 84,666.20

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Solution

The fourth proportional to 262,189.40, 393,341.70 and 84,666.20 is: 127,017.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,189.40 : 393,341.70 = 84,666.20 : x
  2. Step 2: Convert to fraction form
    262,189.40/393,341.70 = 84,666.20/x
  3. Step 3: Cross multiply
    262,189.40x = 393,341.70 × 84,666.20
  4. Step 4: Simplify right side
    262,189.40x = 33,302,747,040.54
  5. Step 5: Solve for x
    x = 33,302,747,040.54/262,189.40
  6. Step 6: Final answer
    x = 127,017.90

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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.