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Finding the Fourth Proportional to 626,563.14, 864,657.90 and 340,083.15

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Solution

The fourth proportional to 626,563.14, 864,657.90 and 340,083.15 is: 469,315.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,563.14 : 864,657.90 = 340,083.15 : x
  2. Step 2: Convert to fraction form
    626,563.14/864,657.90 = 340,083.15/x
  3. Step 3: Cross multiply
    626,563.14x = 864,657.90 × 340,083.15
  4. Step 4: Simplify right side
    626,563.14x = 294,055,582,304.39
  5. Step 5: Solve for x
    x = 294,055,582,304.39/626,563.14
  6. Step 6: Final answer
    x = 469,315.16

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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.