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Finding the Fourth Proportional to 356,807.19, 535,077.44 and 143,503.11

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Solution

The fourth proportional to 356,807.19, 535,077.44 and 143,503.11 is: 215,201.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,807.19 : 535,077.44 = 143,503.11 : x
  2. Step 2: Convert to fraction form
    356,807.19/535,077.44 = 143,503.11/x
  3. Step 3: Cross multiply
    356,807.19x = 535,077.44 × 143,503.11
  4. Step 4: Simplify right side
    356,807.19x = 76,785,277,089.60
  5. Step 5: Solve for x
    x = 76,785,277,089.60/356,807.19
  6. Step 6: Final answer
    x = 215,201.04

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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.