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Finding the Fourth Proportional to 103,628.98, 143,007.98 and 58,916.98

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Solution

The fourth proportional to 103,628.98, 143,007.98 and 58,916.98 is: 81,305.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.98 : 143,007.98 = 58,916.98 : x
  2. Step 2: Convert to fraction form
    103,628.98/143,007.98 = 58,916.98/x
  3. Step 3: Cross multiply
    103,628.98x = 143,007.98 × 58,916.98
  4. Step 4: Simplify right side
    103,628.98x = 8,425,598,297.50
  5. Step 5: Solve for x
    x = 8,425,598,297.50/103,628.98
  6. Step 6: Final answer
    x = 81,305.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.