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Finding the Fourth Proportional to 343,633.32, 515,242.88 and 154,059.40

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Solution

The fourth proportional to 343,633.32, 515,242.88 and 154,059.40 is: 230,996.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,633.32 : 515,242.88 = 154,059.40 : x
  2. Step 2: Convert to fraction form
    343,633.32/515,242.88 = 154,059.40/x
  3. Step 3: Cross multiply
    343,633.32x = 515,242.88 × 154,059.40
  4. Step 4: Simplify right side
    343,633.32x = 79,378,008,947.07
  5. Step 5: Solve for x
    x = 79,378,008,947.07/343,633.32
  6. Step 6: Final answer
    x = 230,996.25

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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.