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Finding the Fourth Proportional to 104,518.40, 156,518.40 and 83,782.40

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Solution

The fourth proportional to 104,518.40, 156,518.40 and 83,782.40 is: 125,465.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,518.40 : 156,518.40 = 83,782.40 : x
  2. Step 2: Convert to fraction form
    104,518.40/156,518.40 = 83,782.40/x
  3. Step 3: Cross multiply
    104,518.40x = 156,518.40 × 83,782.40
  4. Step 4: Simplify right side
    104,518.40x = 13,113,487,196.16
  5. Step 5: Solve for x
    x = 13,113,487,196.16/104,518.40
  6. Step 6: Final answer
    x = 125,465.82

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.