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Finding the Fourth Proportional to 289,556.40, 399,610.48 and 186,282.80

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Solution

The fourth proportional to 289,556.40, 399,610.48 and 186,282.80 is: 257,084.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,556.40 : 399,610.48 = 186,282.80 : x
  2. Step 2: Convert to fraction form
    289,556.40/399,610.48 = 186,282.80/x
  3. Step 3: Cross multiply
    289,556.40x = 399,610.48 × 186,282.80
  4. Step 4: Simplify right side
    289,556.40x = 74,440,559,123.74
  5. Step 5: Solve for x
    x = 74,440,559,123.74/289,556.40
  6. Step 6: Final answer
    x = 257,084.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.