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Finding the Fourth Proportional to 42,903.90, 64,363.98 and 16,257.90

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Solution

The fourth proportional to 42,903.90, 64,363.98 and 16,257.90 is: 24,389.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,903.90 : 64,363.98 = 16,257.90 : x
  2. Step 2: Convert to fraction form
    42,903.90/64,363.98 = 16,257.90/x
  3. Step 3: Cross multiply
    42,903.90x = 64,363.98 × 16,257.90
  4. Step 4: Simplify right side
    42,903.90x = 1,046,423,150.44
  5. Step 5: Solve for x
    x = 1,046,423,150.44/42,903.90
  6. Step 6: Final answer
    x = 24,389.93

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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.