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Finding the Fourth Proportional to 70,197.54, 105,315.87 and 39,054.66

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Solution

The fourth proportional to 70,197.54, 105,315.87 and 39,054.66 is: 58,592.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,197.54 : 105,315.87 = 39,054.66 : x
  2. Step 2: Convert to fraction form
    70,197.54/105,315.87 = 39,054.66/x
  3. Step 3: Cross multiply
    70,197.54x = 105,315.87 × 39,054.66
  4. Step 4: Simplify right side
    70,197.54x = 4,113,075,495.45
  5. Step 5: Solve for x
    x = 4,113,075,495.45/70,197.54
  6. Step 6: Final answer
    x = 58,592.87

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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.