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Finding the Fourth Proportional to 157,058.80, 216,692.21 and 89,070.44

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Solution

The fourth proportional to 157,058.80, 216,692.21 and 89,070.44 is: 122,889.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,058.80 : 216,692.21 = 89,070.44 : x
  2. Step 2: Convert to fraction form
    157,058.80/216,692.21 = 89,070.44/x
  3. Step 3: Cross multiply
    157,058.80x = 216,692.21 × 89,070.44
  4. Step 4: Simplify right side
    157,058.80x = 19,300,869,628.49
  5. Step 5: Solve for x
    x = 19,300,869,628.49/157,058.80
  6. Step 6: Final answer
    x = 122,889.45

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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.