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Finding the Fourth Proportional to 111,089.64, 153,307.56 and 60,788.64

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Solution

The fourth proportional to 111,089.64, 153,307.56 and 60,788.64 is: 83,890.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,089.64 : 153,307.56 = 60,788.64 : x
  2. Step 2: Convert to fraction form
    111,089.64/153,307.56 = 60,788.64/x
  3. Step 3: Cross multiply
    111,089.64x = 153,307.56 × 60,788.64
  4. Step 4: Simplify right side
    111,089.64x = 9,319,358,074.12
  5. Step 5: Solve for x
    x = 9,319,358,074.12/111,089.64
  6. Step 6: Final answer
    x = 83,890.43

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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.