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Finding the Fourth Proportional to 626,698.19, 864,853.94 and 340,218.27

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Solution

The fourth proportional to 626,698.19, 864,853.94 and 340,218.27 is: 469,506.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,698.19 : 864,853.94 = 340,218.27 : x
  2. Step 2: Convert to fraction form
    626,698.19/864,853.94 = 340,218.27/x
  3. Step 3: Cross multiply
    626,698.19x = 864,853.94 × 340,218.27
  4. Step 4: Simplify right side
    626,698.19x = 294,239,111,269.48
  5. Step 5: Solve for x
    x = 294,239,111,269.48/626,698.19
  6. Step 6: Final answer
    x = 469,506.88

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Double scale
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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.