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Finding the Fourth Proportional to 111,356.64, 153,636 and 62,953.89

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Solution

The fourth proportional to 111,356.64, 153,636 and 62,953.89 is: 86,855.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,356.64 : 153,636 = 62,953.89 : x
  2. Step 2: Convert to fraction form
    111,356.64/153,636 = 62,953.89/x
  3. Step 3: Cross multiply
    111,356.64x = 153,636 × 62,953.89
  4. Step 4: Simplify right side
    111,356.64x = 9,671,983,844.04
  5. Step 5: Solve for x
    x = 9,671,983,844.04/111,356.64
  6. Step 6: Final answer
    x = 86,855.92

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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.