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Finding the Fourth Proportional to 70,885.37, 97,821.80 and 39,054.95

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Solution

The fourth proportional to 70,885.37, 97,821.80 and 39,054.95 is: 53,895.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,885.37 : 97,821.80 = 39,054.95 : x
  2. Step 2: Convert to fraction form
    70,885.37/97,821.80 = 39,054.95/x
  3. Step 3: Cross multiply
    70,885.37x = 97,821.80 × 39,054.95
  4. Step 4: Simplify right side
    70,885.37x = 3,820,424,823.53
  5. Step 5: Solve for x
    x = 3,820,424,823.53/70,885.37
  6. Step 6: Final answer
    x = 53,895.82

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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.