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Finding the Fourth Proportional to 103,628.60, 143,007.46 and 58,916.60

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Solution

The fourth proportional to 103,628.60, 143,007.46 and 58,916.60 is: 81,304.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.60 : 143,007.46 = 58,916.60 : x
  2. Step 2: Convert to fraction form
    103,628.60/143,007.46 = 58,916.60/x
  3. Step 3: Cross multiply
    103,628.60x = 143,007.46 × 58,916.60
  4. Step 4: Simplify right side
    103,628.60x = 8,425,513,317.84
  5. Step 5: Solve for x
    x = 8,425,513,317.84/103,628.60
  6. Step 6: Final answer
    x = 81,304.90

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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.