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Finding the Fourth Proportional to 93,058.56, 128,420.90 and 52,772.49

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Solution

The fourth proportional to 93,058.56, 128,420.90 and 52,772.49 is: 72,826.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,058.56 : 128,420.90 = 52,772.49 : x
  2. Step 2: Convert to fraction form
    93,058.56/128,420.90 = 52,772.49/x
  3. Step 3: Cross multiply
    93,058.56x = 128,420.90 × 52,772.49
  4. Step 4: Simplify right side
    93,058.56x = 6,777,090,397.18
  5. Step 5: Solve for x
    x = 6,777,090,397.18/93,058.56
  6. Step 6: Final answer
    x = 72,826.08

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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.