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Finding the Fourth Proportional to 387,186.02, 534,167.46 and 285,453.32

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Solution

The fourth proportional to 387,186.02, 534,167.46 and 285,453.32 is: 393,815.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,186.02 : 534,167.46 = 285,453.32 : x
  2. Step 2: Convert to fraction form
    387,186.02/534,167.46 = 285,453.32/x
  3. Step 3: Cross multiply
    387,186.02x = 534,167.46 × 285,453.32
  4. Step 4: Simplify right side
    387,186.02x = 152,479,872,222.13
  5. Step 5: Solve for x
    x = 152,479,872,222.13/387,186.02
  6. Step 6: Final answer
    x = 393,815.54

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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.