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Finding the Fourth Proportional to 386,393.52, 579,524.66 and 102,087.16

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Solution

The fourth proportional to 386,393.52, 579,524.66 and 102,087.16 is: 153,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,393.52 : 579,524.66 = 102,087.16 : x
  2. Step 2: Convert to fraction form
    386,393.52/579,524.66 = 102,087.16/x
  3. Step 3: Cross multiply
    386,393.52x = 579,524.66 × 102,087.16
  4. Step 4: Simplify right side
    386,393.52x = 59,162,026,689.37
  5. Step 5: Solve for x
    x = 59,162,026,689.37/386,393.52
  6. Step 6: Final answer
    x = 153,113.40

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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.