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Finding the Fourth Proportional to 70,104.20, 105,068.80 and 35,053.88

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Solution

The fourth proportional to 70,104.20, 105,068.80 and 35,053.88 is: 52,537.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,104.20 : 105,068.80 = 35,053.88 : x
  2. Step 2: Convert to fraction form
    70,104.20/105,068.80 = 35,053.88/x
  3. Step 3: Cross multiply
    70,104.20x = 105,068.80 × 35,053.88
  4. Step 4: Simplify right side
    70,104.20x = 3,683,069,106.94
  5. Step 5: Solve for x
    x = 3,683,069,106.94/70,104.20
  6. Step 6: Final answer
    x = 52,537.07

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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.