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Finding the Fourth Proportional to 386,806.69, 577,562.84 and 346,565.89

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Solution

The fourth proportional to 386,806.69, 577,562.84 and 346,565.89 is: 517,477.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,806.69 : 577,562.84 = 346,565.89 : x
  2. Step 2: Convert to fraction form
    386,806.69/577,562.84 = 346,565.89/x
  3. Step 3: Cross multiply
    386,806.69x = 577,562.84 × 346,565.89
  4. Step 4: Simplify right side
    386,806.69x = 200,163,579,675.53
  5. Step 5: Solve for x
    x = 200,163,579,675.53/386,806.69
  6. Step 6: Final answer
    x = 517,477.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.