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Finding the Fourth Proportional to 429,730.58, 644,374.14 and 192,870.59

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Solution

The fourth proportional to 429,730.58, 644,374.14 and 192,870.59 is: 289,206.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,730.58 : 644,374.14 = 192,870.59 : x
  2. Step 2: Convert to fraction form
    429,730.58/644,374.14 = 192,870.59/x
  3. Step 3: Cross multiply
    429,730.58x = 644,374.14 × 192,870.59
  4. Step 4: Simplify right side
    429,730.58x = 124,280,816,617.41
  5. Step 5: Solve for x
    x = 124,280,816,617.41/429,730.58
  6. Step 6: Final answer
    x = 289,206.36

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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.