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Finding the Fourth Proportional to 931,545, 1,285,520.67 and 523,714.86

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Solution

The fourth proportional to 931,545, 1,285,520.67 and 523,714.86 is: 722,720.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,545 : 1,285,520.67 = 523,714.86 : x
  2. Step 2: Convert to fraction form
    931,545/1,285,520.67 = 523,714.86/x
  3. Step 3: Cross multiply
    931,545x = 1,285,520.67 × 523,714.86
  4. Step 4: Simplify right side
    931,545x = 673,246,277,716.16
  5. Step 5: Solve for x
    x = 673,246,277,716.16/931,545
  6. Step 6: Final answer
    x = 722,720.08

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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.