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Finding the Fourth Proportional to 375,702.76, 563,640.54 and 122,991.40

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Solution

The fourth proportional to 375,702.76, 563,640.54 and 122,991.40 is: 184,515.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,702.76 : 563,640.54 = 122,991.40 : x
  2. Step 2: Convert to fraction form
    375,702.76/563,640.54 = 122,991.40/x
  3. Step 3: Cross multiply
    375,702.76x = 563,640.54 × 122,991.40
  4. Step 4: Simplify right side
    375,702.76x = 69,322,939,111.36
  5. Step 5: Solve for x
    x = 69,322,939,111.36/375,702.76
  6. Step 6: Final answer
    x = 184,515.38

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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.