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Finding the Fourth Proportional to 473,218.55, 708,696.22 and 272,931.72

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Solution

The fourth proportional to 473,218.55, 708,696.22 and 272,931.72 is: 408,744.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,218.55 : 708,696.22 = 272,931.72 : x
  2. Step 2: Convert to fraction form
    473,218.55/708,696.22 = 272,931.72/x
  3. Step 3: Cross multiply
    473,218.55x = 708,696.22 × 272,931.72
  4. Step 4: Simplify right side
    473,218.55x = 193,425,678,282.10
  5. Step 5: Solve for x
    x = 193,425,678,282.10/473,218.55
  6. Step 6: Final answer
    x = 408,744.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.