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Finding the Fourth Proportional to 391,963.65, 537,388.32 and 384,877.77

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Solution

The fourth proportional to 391,963.65, 537,388.32 and 384,877.77 is: 527,673.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,963.65 : 537,388.32 = 384,877.77 : x
  2. Step 2: Convert to fraction form
    391,963.65/537,388.32 = 384,877.77/x
  3. Step 3: Cross multiply
    391,963.65x = 537,388.32 × 384,877.77
  4. Step 4: Simplify right side
    391,963.65x = 206,828,818,225.65
  5. Step 5: Solve for x
    x = 206,828,818,225.65/391,963.65
  6. Step 6: Final answer
    x = 527,673.47

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.