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Finding the Fourth Proportional to 111,840.60, 156,784.20 and 111,840.60

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Solution

The fourth proportional to 111,840.60, 156,784.20 and 111,840.60 is: 156,784.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,840.60 : 156,784.20 = 111,840.60 : x
  2. Step 2: Convert to fraction form
    111,840.60/156,784.20 = 111,840.60/x
  3. Step 3: Cross multiply
    111,840.60x = 156,784.20 × 111,840.60
  4. Step 4: Simplify right side
    111,840.60x = 17,534,838,998.52
  5. Step 5: Solve for x
    x = 17,534,838,998.52/111,840.60
  6. Step 6: Final answer
    x = 156,784.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.