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Finding the Fourth Proportional to 144,462.80, 216,629.40 and 65,536.40

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Solution

The fourth proportional to 144,462.80, 216,629.40 and 65,536.40 is: 98,275.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,462.80 : 216,629.40 = 65,536.40 : x
  2. Step 2: Convert to fraction form
    144,462.80/216,629.40 = 65,536.40/x
  3. Step 3: Cross multiply
    144,462.80x = 216,629.40 × 65,536.40
  4. Step 4: Simplify right side
    144,462.80x = 14,197,111,010.16
  5. Step 5: Solve for x
    x = 14,197,111,010.16/144,462.80
  6. Step 6: Final answer
    x = 98,275.20

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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.