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Finding the Fourth Proportional to 118,100.73, 162,940.08 and 70,347.60

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Solution

The fourth proportional to 118,100.73, 162,940.08 and 70,347.60 is: 97,056.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,100.73 : 162,940.08 = 70,347.60 : x
  2. Step 2: Convert to fraction form
    118,100.73/162,940.08 = 70,347.60/x
  3. Step 3: Cross multiply
    118,100.73x = 162,940.08 × 70,347.60
  4. Step 4: Simplify right side
    118,100.73x = 11,462,443,571.81
  5. Step 5: Solve for x
    x = 11,462,443,571.81/118,100.73
  6. Step 6: Final answer
    x = 97,056.50

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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.