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Finding the Fourth Proportional to 104,100.03, 143,622.72 and 67,784.90

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Solution

The fourth proportional to 104,100.03, 143,622.72 and 67,784.90 is: 93,520.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,100.03 : 143,622.72 = 67,784.90 : x
  2. Step 2: Convert to fraction form
    104,100.03/143,622.72 = 67,784.90/x
  3. Step 3: Cross multiply
    104,100.03x = 143,622.72 × 67,784.90
  4. Step 4: Simplify right side
    104,100.03x = 9,735,450,994.81
  5. Step 5: Solve for x
    x = 9,735,450,994.81/104,100.03
  6. Step 6: Final answer
    x = 93,520.16

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1.5x scale

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.