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Finding the Fourth Proportional to 107,910.60, 161,904.30 and 104,070.60

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Solution

The fourth proportional to 107,910.60, 161,904.30 and 104,070.60 is: 156,142.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,910.60 : 161,904.30 = 104,070.60 : x
  2. Step 2: Convert to fraction form
    107,910.60/161,904.30 = 104,070.60/x
  3. Step 3: Cross multiply
    107,910.60x = 161,904.30 × 104,070.60
  4. Step 4: Simplify right side
    107,910.60x = 16,849,477,643.58
  5. Step 5: Solve for x
    x = 16,849,477,643.58/107,910.60
  6. Step 6: Final answer
    x = 156,142.93

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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.