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Finding the Fourth Proportional to 84,706.21, 127,070.35 and 25,547.86

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Solution

The fourth proportional to 84,706.21, 127,070.35 and 25,547.86 is: 38,325.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,706.21 : 127,070.35 = 25,547.86 : x
  2. Step 2: Convert to fraction form
    84,706.21/127,070.35 = 25,547.86/x
  3. Step 3: Cross multiply
    84,706.21x = 127,070.35 × 25,547.86
  4. Step 4: Simplify right side
    84,706.21x = 3,246,375,511.95
  5. Step 5: Solve for x
    x = 3,246,375,511.95/84,706.21
  6. Step 6: Final answer
    x = 38,325.12

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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.