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Finding the Fourth Proportional to 414,434.79, 621,650.09 and 358,103.49

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Solution

The fourth proportional to 414,434.79, 621,650.09 and 358,103.49 is: 537,153.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,434.79 : 621,650.09 = 358,103.49 : x
  2. Step 2: Convert to fraction form
    414,434.79/621,650.09 = 358,103.49/x
  3. Step 3: Cross multiply
    414,434.79x = 621,650.09 × 358,103.49
  4. Step 4: Simplify right side
    414,434.79x = 222,615,066,787.81
  5. Step 5: Solve for x
    x = 222,615,066,787.81/414,434.79
  6. Step 6: Final answer
    x = 537,153.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.