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Finding the Fourth Proportional to 144,563.40, 216,699.30 and 65,734.20

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Solution

The fourth proportional to 144,563.40, 216,699.30 and 65,734.20 is: 98,535.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,563.40 : 216,699.30 = 65,734.20 : x
  2. Step 2: Convert to fraction form
    144,563.40/216,699.30 = 65,734.20/x
  3. Step 3: Cross multiply
    144,563.40x = 216,699.30 × 65,734.20
  4. Step 4: Simplify right side
    144,563.40x = 14,244,555,126.06
  5. Step 5: Solve for x
    x = 14,244,555,126.06/144,563.40
  6. Step 6: Final answer
    x = 98,535.00

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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.