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Finding the Fourth Proportional to 73,006.60, 100,770.65 and 42,798.46

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Solution

The fourth proportional to 73,006.60, 100,770.65 and 42,798.46 is: 59,074.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,006.60 : 100,770.65 = 42,798.46 : x
  2. Step 2: Convert to fraction form
    73,006.60/100,770.65 = 42,798.46/x
  3. Step 3: Cross multiply
    73,006.60x = 100,770.65 × 42,798.46
  4. Step 4: Simplify right side
    73,006.60x = 4,312,828,633.20
  5. Step 5: Solve for x
    x = 4,312,828,633.20/73,006.60
  6. Step 6: Final answer
    x = 59,074.50

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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.