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Finding the Fourth Proportional to 98,857.53, 136,423.80 and 53,536.01

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Solution

The fourth proportional to 98,857.53, 136,423.80 and 53,536.01 is: 73,879.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,857.53 : 136,423.80 = 53,536.01 : x
  2. Step 2: Convert to fraction form
    98,857.53/136,423.80 = 53,536.01/x
  3. Step 3: Cross multiply
    98,857.53x = 136,423.80 × 53,536.01
  4. Step 4: Simplify right side
    98,857.53x = 7,303,585,238.92
  5. Step 5: Solve for x
    x = 7,303,585,238.92/98,857.53
  6. Step 6: Final answer
    x = 73,879.91

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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.