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Finding the Fourth Proportional to 525,815.19, 788,855.84 and 146,735.88

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Solution

The fourth proportional to 525,815.19, 788,855.84 and 146,735.88 is: 220,140.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,815.19 : 788,855.84 = 146,735.88 : x
  2. Step 2: Convert to fraction form
    525,815.19/788,855.84 = 146,735.88/x
  3. Step 3: Cross multiply
    525,815.19x = 788,855.84 × 146,735.88
  4. Step 4: Simplify right side
    525,815.19x = 115,753,455,141.86
  5. Step 5: Solve for x
    x = 115,753,455,141.86/525,815.19
  6. Step 6: Final answer
    x = 220,140.95

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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.