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Finding the Fourth Proportional to 341,491.20, 512,390.40 and 154,406.40

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Solution

The fourth proportional to 341,491.20, 512,390.40 and 154,406.40 is: 231,679.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,491.20 : 512,390.40 = 154,406.40 : x
  2. Step 2: Convert to fraction form
    341,491.20/512,390.40 = 154,406.40/x
  3. Step 3: Cross multiply
    341,491.20x = 512,390.40 × 154,406.40
  4. Step 4: Simplify right side
    341,491.20x = 79,116,357,058.56
  5. Step 5: Solve for x
    x = 79,116,357,058.56/341,491.20
  6. Step 6: Final answer
    x = 231,679.05

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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.