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Finding the Fourth Proportional to 476,690.40, 657,831.24 and 261,843.84

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Solution

The fourth proportional to 476,690.40, 657,831.24 and 261,843.84 is: 361,343.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,690.40 : 657,831.24 = 261,843.84 : x
  2. Step 2: Convert to fraction form
    476,690.40/657,831.24 = 261,843.84/x
  3. Step 3: Cross multiply
    476,690.40x = 657,831.24 × 261,843.84
  4. Step 4: Simplify right side
    476,690.40x = 172,249,057,953.56
  5. Step 5: Solve for x
    x = 172,249,057,953.56/476,690.40
  6. Step 6: Final answer
    x = 361,343.67

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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.