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Finding the Fourth Proportional to 626,516.40, 864,593.46 and 340,036.48

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Solution

The fourth proportional to 626,516.40, 864,593.46 and 340,036.48 is: 469,250.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,516.40 : 864,593.46 = 340,036.48 : x
  2. Step 2: Convert to fraction form
    626,516.40/864,593.46 = 340,036.48/x
  3. Step 3: Cross multiply
    626,516.40x = 864,593.46 × 340,036.48
  4. Step 4: Simplify right side
    626,516.40x = 293,993,316,769.42
  5. Step 5: Solve for x
    x = 293,993,316,769.42/626,516.40
  6. Step 6: Final answer
    x = 469,250.79

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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.