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Finding the Fourth Proportional to 625,742.81, 863,501.09 and 353,816.39

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Solution

The fourth proportional to 625,742.81, 863,501.09 and 353,816.39 is: 488,253.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,742.81 : 863,501.09 = 353,816.39 : x
  2. Step 2: Convert to fraction form
    625,742.81/863,501.09 = 353,816.39/x
  3. Step 3: Cross multiply
    625,742.81x = 863,501.09 × 353,816.39
  4. Step 4: Simplify right side
    625,742.81x = 305,520,835,576.41
  5. Step 5: Solve for x
    x = 305,520,835,576.41/625,742.81
  6. Step 6: Final answer
    x = 488,253.05

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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.