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Finding the Fourth Proportional to 457,416.45, 631,226.32 and 253,462.91

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Solution

The fourth proportional to 457,416.45, 631,226.32 and 253,462.91 is: 349,774.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,416.45 : 631,226.32 = 253,462.91 : x
  2. Step 2: Convert to fraction form
    457,416.45/631,226.32 = 253,462.91/x
  3. Step 3: Cross multiply
    457,416.45x = 631,226.32 × 253,462.91
  4. Step 4: Simplify right side
    457,416.45x = 159,992,456,146.00
  5. Step 5: Solve for x
    x = 159,992,456,146.00/457,416.45
  6. Step 6: Final answer
    x = 349,774.16

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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.