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Finding the Fourth Proportional to 558,417.15, 770,630.46 and 316,654.02

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Solution

The fourth proportional to 558,417.15, 770,630.46 and 316,654.02 is: 436,990.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,417.15 : 770,630.46 = 316,654.02 : x
  2. Step 2: Convert to fraction form
    558,417.15/770,630.46 = 316,654.02/x
  3. Step 3: Cross multiply
    558,417.15x = 770,630.46 × 316,654.02
  4. Step 4: Simplify right side
    558,417.15x = 244,023,233,093.45
  5. Step 5: Solve for x
    x = 244,023,233,093.45/558,417.15
  6. Step 6: Final answer
    x = 436,990.94

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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.