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Finding the Fourth Proportional to 626,649.51, 864,777.42 and 340,169.79

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Solution

The fourth proportional to 626,649.51, 864,777.42 and 340,169.79 is: 469,434.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,649.51 : 864,777.42 = 340,169.79 : x
  2. Step 2: Convert to fraction form
    626,649.51/864,777.42 = 340,169.79/x
  3. Step 3: Cross multiply
    626,649.51x = 864,777.42 × 340,169.79
  4. Step 4: Simplify right side
    626,649.51x = 294,171,153,358.14
  5. Step 5: Solve for x
    x = 294,171,153,358.14/626,649.51
  6. Step 6: Final answer
    x = 469,434.91

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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.