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Finding the Fourth Proportional to 260,063.58, 390,109.95 and 73,060.50

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Solution

The fourth proportional to 260,063.58, 390,109.95 and 73,060.50 is: 109,594.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,063.58 : 390,109.95 = 73,060.50 : x
  2. Step 2: Convert to fraction form
    260,063.58/390,109.95 = 73,060.50/x
  3. Step 3: Cross multiply
    260,063.58x = 390,109.95 × 73,060.50
  4. Step 4: Simplify right side
    260,063.58x = 28,501,628,001.98
  5. Step 5: Solve for x
    x = 28,501,628,001.98/260,063.58
  6. Step 6: Final answer
    x = 109,594.85

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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.