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Finding the Fourth Proportional to 386,590.35, 533,521.32 and 216,835.41

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Solution

The fourth proportional to 386,590.35, 533,521.32 and 216,835.41 is: 299,247.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,590.35 : 533,521.32 = 216,835.41 : x
  2. Step 2: Convert to fraction form
    386,590.35/533,521.32 = 216,835.41/x
  3. Step 3: Cross multiply
    386,590.35x = 533,521.32 × 216,835.41
  4. Step 4: Simplify right side
    386,590.35x = 115,686,314,165.94
  5. Step 5: Solve for x
    x = 115,686,314,165.94/386,590.35
  6. Step 6: Final answer
    x = 299,247.81

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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.