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Finding the Fourth Proportional to 384,146.37, 530,108.08 and 212,060.64

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Solution

The fourth proportional to 384,146.37, 530,108.08 and 212,060.64 is: 292,636.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,146.37 : 530,108.08 = 212,060.64 : x
  2. Step 2: Convert to fraction form
    384,146.37/530,108.08 = 212,060.64/x
  3. Step 3: Cross multiply
    384,146.37x = 530,108.08 × 212,060.64
  4. Step 4: Simplify right side
    384,146.37x = 112,415,058,713.97
  5. Step 5: Solve for x
    x = 112,415,058,713.97/384,146.37
  6. Step 6: Final answer
    x = 292,636.00

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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.