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Finding the Fourth Proportional to 223,864,706.80, 335,797,060.20 and 78,249,872.80

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Solution

The fourth proportional to 223,864,706.80, 335,797,060.20 and 78,249,872.80 is: 117,374,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,864,706.80 : 335,797,060.20 = 78,249,872.80 : x
  2. Step 2: Convert to fraction form
    223,864,706.80/335,797,060.20 = 78,249,872.80/x
  3. Step 3: Cross multiply
    223,864,706.80x = 335,797,060.20 × 78,249,872.80
  4. Step 4: Simplify right side
    223,864,706.80x = 26,276,077,247,263,940
  5. Step 5: Solve for x
    x = 26,276,077,247,263,940/223,864,706.80
  6. Step 6: Final answer
    x = 117,374,809.20

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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.