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Finding the Fourth Proportional to 111,281.52, 153,575.16 and 68,265.84

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Solution

The fourth proportional to 111,281.52, 153,575.16 and 68,265.84 is: 94,210.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,281.52 : 153,575.16 = 68,265.84 : x
  2. Step 2: Convert to fraction form
    111,281.52/153,575.16 = 68,265.84/x
  3. Step 3: Cross multiply
    111,281.52x = 153,575.16 × 68,265.84
  4. Step 4: Simplify right side
    111,281.52x = 10,483,937,300.53
  5. Step 5: Solve for x
    x = 10,483,937,300.53/111,281.52
  6. Step 6: Final answer
    x = 94,210.95

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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.