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Finding the Fourth Proportional to 331,345.80, 497,277.90 and 153,874.80

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Solution

The fourth proportional to 331,345.80, 497,277.90 and 153,874.80 is: 230,932.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,345.80 : 497,277.90 = 153,874.80 : x
  2. Step 2: Convert to fraction form
    331,345.80/497,277.90 = 153,874.80/x
  3. Step 3: Cross multiply
    331,345.80x = 497,277.90 × 153,874.80
  4. Step 4: Simplify right side
    331,345.80x = 76,518,537,406.92
  5. Step 5: Solve for x
    x = 76,518,537,406.92/331,345.80
  6. Step 6: Final answer
    x = 230,932.57

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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.