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Finding the Fourth Proportional to 626,194.15, 864,148.25 and 339,714.21

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Solution

The fourth proportional to 626,194.15, 864,148.25 and 339,714.21 is: 468,805.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,194.15 : 864,148.25 = 339,714.21 : x
  2. Step 2: Convert to fraction form
    626,194.15/864,148.25 = 339,714.21/x
  3. Step 3: Cross multiply
    626,194.15x = 864,148.25 × 339,714.21
  4. Step 4: Simplify right side
    626,194.15x = 293,563,440,071.63
  5. Step 5: Solve for x
    x = 293,563,440,071.63/626,194.15
  6. Step 6: Final answer
    x = 468,805.79

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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.