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Finding the Fourth Proportional to 690,782.80, 953,215.14 and 384,827.98

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Solution

The fourth proportional to 690,782.80, 953,215.14 and 384,827.98 is: 531,026.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,782.80 : 953,215.14 = 384,827.98 : x
  2. Step 2: Convert to fraction form
    690,782.80/953,215.14 = 384,827.98/x
  3. Step 3: Cross multiply
    690,782.80x = 953,215.14 × 384,827.98
  4. Step 4: Simplify right side
    690,782.80x = 366,823,856,831.62
  5. Step 5: Solve for x
    x = 366,823,856,831.62/690,782.80
  6. Step 6: Final answer
    x = 531,026.33

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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.