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Finding the Fourth Proportional to 558,366.53, 770,682.69 and 316,790.51

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Solution

The fourth proportional to 558,366.53, 770,682.69 and 316,790.51 is: 437,248.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,366.53 : 770,682.69 = 316,790.51 : x
  2. Step 2: Convert to fraction form
    558,366.53/770,682.69 = 316,790.51/x
  3. Step 3: Cross multiply
    558,366.53x = 770,682.69 × 316,790.51
  4. Step 4: Simplify right side
    558,366.53x = 244,144,956,975.91
  5. Step 5: Solve for x
    x = 244,144,956,975.91/558,366.53
  6. Step 6: Final answer
    x = 437,248.56

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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.