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Finding the Fourth Proportional to 223,895.80, 335,843.70 and 211,065.40

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Solution

The fourth proportional to 223,895.80, 335,843.70 and 211,065.40 is: 316,598.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,895.80 : 335,843.70 = 211,065.40 : x
  2. Step 2: Convert to fraction form
    223,895.80/335,843.70 = 211,065.40/x
  3. Step 3: Cross multiply
    223,895.80x = 335,843.70 × 211,065.40
  4. Step 4: Simplify right side
    223,895.80x = 70,884,984,877.98
  5. Step 5: Solve for x
    x = 70,884,984,877.98/223,895.80
  6. Step 6: Final answer
    x = 316,598.10

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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.