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Finding the Fourth Proportional to 317,329,212.40, 475,993,818.60 and 220,583,330.80

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Solution

The fourth proportional to 317,329,212.40, 475,993,818.60 and 220,583,330.80 is: 330,874,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,329,212.40 : 475,993,818.60 = 220,583,330.80 : x
  2. Step 2: Convert to fraction form
    317,329,212.40/475,993,818.60 = 220,583,330.80/x
  3. Step 3: Cross multiply
    317,329,212.40x = 475,993,818.60 × 220,583,330.80
  4. Step 4: Simplify right side
    317,329,212.40x = 104,996,301,946,999,008
  5. Step 5: Solve for x
    x = 104,996,301,946,999,008/317,329,212.40
  6. Step 6: Final answer
    x = 330,874,996.20

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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.