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Finding the Fourth Proportional to 562,405.20, 843,681.80 and 207,668.40

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Solution

The fourth proportional to 562,405.20, 843,681.80 and 207,668.40 is: 311,529.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,405.20 : 843,681.80 = 207,668.40 : x
  2. Step 2: Convert to fraction form
    562,405.20/843,681.80 = 207,668.40/x
  3. Step 3: Cross multiply
    562,405.20x = 843,681.80 × 207,668.40
  4. Step 4: Simplify right side
    562,405.20x = 175,206,049,515.12
  5. Step 5: Solve for x
    x = 175,206,049,515.12/562,405.20
  6. Step 6: Final answer
    x = 311,529.92

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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.