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Finding the Fourth Proportional to 102,068.88, 153,106.20 and 28,196.88

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Solution

The fourth proportional to 102,068.88, 153,106.20 and 28,196.88 is: 42,296.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,068.88 : 153,106.20 = 28,196.88 : x
  2. Step 2: Convert to fraction form
    102,068.88/153,106.20 = 28,196.88/x
  3. Step 3: Cross multiply
    102,068.88x = 153,106.20 × 28,196.88
  4. Step 4: Simplify right side
    102,068.88x = 4,317,117,148.66
  5. Step 5: Solve for x
    x = 4,317,117,148.66/102,068.88
  6. Step 6: Final answer
    x = 42,296.12

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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.