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Finding the Fourth Proportional to 313,970.67, 433,127.25 and 186,556.05

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Solution

The fourth proportional to 313,970.67, 433,127.25 and 186,556.05 is: 257,356.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,970.67 : 433,127.25 = 186,556.05 : x
  2. Step 2: Convert to fraction form
    313,970.67/433,127.25 = 186,556.05/x
  3. Step 3: Cross multiply
    313,970.67x = 433,127.25 × 186,556.05
  4. Step 4: Simplify right side
    313,970.67x = 80,802,508,907.36
  5. Step 5: Solve for x
    x = 80,802,508,907.36/313,970.67
  6. Step 6: Final answer
    x = 257,356.87

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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.