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Finding the Fourth Proportional to 154,000.52, 212,518.45 and 86,018.44

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Solution

The fourth proportional to 154,000.52, 212,518.45 and 86,018.44 is: 118,704.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,000.52 : 212,518.45 = 86,018.44 : x
  2. Step 2: Convert to fraction form
    154,000.52/212,518.45 = 86,018.44/x
  3. Step 3: Cross multiply
    154,000.52x = 212,518.45 × 86,018.44
  4. Step 4: Simplify right side
    154,000.52x = 18,280,505,913.39
  5. Step 5: Solve for x
    x = 18,280,505,913.39/154,000.52
  6. Step 6: Final answer
    x = 118,704.19

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1.5x scale

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.