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Finding the Fourth Proportional to 558,685.01, 771,002.81 and 316,977.77

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Solution

The fourth proportional to 558,685.01, 771,002.81 and 316,977.77 is: 437,439.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,685.01 : 771,002.81 = 316,977.77 : x
  2. Step 2: Convert to fraction form
    558,685.01/771,002.81 = 316,977.77/x
  3. Step 3: Cross multiply
    558,685.01x = 771,002.81 × 316,977.77
  4. Step 4: Simplify right side
    558,685.01x = 244,390,745,937.63
  5. Step 5: Solve for x
    x = 244,390,745,937.63/558,685.01
  6. Step 6: Final answer
    x = 437,439.24

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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.