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Finding the Fourth Proportional to 626,703.69, 864,861.54 and 340,223.79

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Solution

The fourth proportional to 626,703.69, 864,861.54 and 340,223.79 is: 469,514.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,703.69 : 864,861.54 = 340,223.79 : x
  2. Step 2: Convert to fraction form
    626,703.69/864,861.54 = 340,223.79/x
  3. Step 3: Cross multiply
    626,703.69x = 864,861.54 × 340,223.79
  4. Step 4: Simplify right side
    626,703.69x = 294,246,470,964.04
  5. Step 5: Solve for x
    x = 294,246,470,964.04/626,703.69
  6. Step 6: Final answer
    x = 469,514.50

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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.