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Finding the Fourth Proportional to 617,978.48, 926,599.57 and 191,387.93

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Solution

The fourth proportional to 617,978.48, 926,599.57 and 191,387.93 is: 286,967.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,978.48 : 926,599.57 = 191,387.93 : x
  2. Step 2: Convert to fraction form
    617,978.48/926,599.57 = 191,387.93/x
  3. Step 3: Cross multiply
    617,978.48x = 926,599.57 × 191,387.93
  4. Step 4: Simplify right side
    617,978.48x = 177,339,968,529.72
  5. Step 5: Solve for x
    x = 177,339,968,529.72/617,978.48
  6. Step 6: Final answer
    x = 286,967.87

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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.