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Finding the Fourth Proportional to 620,809.27, 856,722.42 and 375,799.66

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Solution

The fourth proportional to 620,809.27, 856,722.42 and 375,799.66 is: 518,606.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,809.27 : 856,722.42 = 375,799.66 : x
  2. Step 2: Convert to fraction form
    620,809.27/856,722.42 = 375,799.66/x
  3. Step 3: Cross multiply
    620,809.27x = 856,722.42 × 375,799.66
  4. Step 4: Simplify right side
    620,809.27x = 321,955,994,150.38
  5. Step 5: Solve for x
    x = 321,955,994,150.38/620,809.27
  6. Step 6: Final answer
    x = 518,606.94

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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.