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Finding the Fourth Proportional to 108,297.96, 149,391.18 and 62,970.94

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Solution

The fourth proportional to 108,297.96, 149,391.18 and 62,970.94 is: 86,865.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,297.96 : 149,391.18 = 62,970.94 : x
  2. Step 2: Convert to fraction form
    108,297.96/149,391.18 = 62,970.94/x
  3. Step 3: Cross multiply
    108,297.96x = 149,391.18 × 62,970.94
  4. Step 4: Simplify right side
    108,297.96x = 9,407,303,032.31
  5. Step 5: Solve for x
    x = 9,407,303,032.31/108,297.96
  6. Step 6: Final answer
    x = 86,865.00

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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.