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Finding the Fourth Proportional to 93,441, 128,948.70 and 59,907

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Solution

The fourth proportional to 93,441, 128,948.70 and 59,907 is: 82,671.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,441 : 128,948.70 = 59,907 : x
  2. Step 2: Convert to fraction form
    93,441/128,948.70 = 59,907/x
  3. Step 3: Cross multiply
    93,441x = 128,948.70 × 59,907
  4. Step 4: Simplify right side
    93,441x = 7,724,929,770.90
  5. Step 5: Solve for x
    x = 7,724,929,770.90/93,441
  6. Step 6: Final answer
    x = 82,671.74

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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.