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Finding the Fourth Proportional to 211,060.40, 315,899.40 and 164,058.80

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Solution

The fourth proportional to 211,060.40, 315,899.40 and 164,058.80 is: 245,550.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,060.40 : 315,899.40 = 164,058.80 : x
  2. Step 2: Convert to fraction form
    211,060.40/315,899.40 = 164,058.80/x
  3. Step 3: Cross multiply
    211,060.40x = 315,899.40 × 164,058.80
  4. Step 4: Simplify right side
    211,060.40x = 51,826,076,484.72
  5. Step 5: Solve for x
    x = 51,826,076,484.72/211,060.40
  6. Step 6: Final answer
    x = 245,550.93

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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.