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Finding the Fourth Proportional to 658,804.50, 988,194.45 and 209,556.44

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Solution

The fourth proportional to 658,804.50, 988,194.45 and 209,556.44 is: 314,330.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,804.50 : 988,194.45 = 209,556.44 : x
  2. Step 2: Convert to fraction form
    658,804.50/988,194.45 = 209,556.44/x
  3. Step 3: Cross multiply
    658,804.50x = 988,194.45 × 209,556.44
  4. Step 4: Simplify right side
    658,804.50x = 207,082,506,028.79
  5. Step 5: Solve for x
    x = 207,082,506,028.79/658,804.50
  6. Step 6: Final answer
    x = 314,330.74

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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.