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Finding the Fourth Proportional to 379,486.32, 523,746.72 and 228,580.08

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Solution

The fourth proportional to 379,486.32, 523,746.72 and 228,580.08 is: 315,474.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,486.32 : 523,746.72 = 228,580.08 : x
  2. Step 2: Convert to fraction form
    379,486.32/523,746.72 = 228,580.08/x
  3. Step 3: Cross multiply
    379,486.32x = 523,746.72 × 228,580.08
  4. Step 4: Simplify right side
    379,486.32x = 119,718,067,157.34
  5. Step 5: Solve for x
    x = 119,718,067,157.34/379,486.32
  6. Step 6: Final answer
    x = 315,474.00

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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.