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Finding the Fourth Proportional to 411,803.69, 617,641.74 and 112,308.62

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Solution

The fourth proportional to 411,803.69, 617,641.74 and 112,308.62 is: 168,445.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,803.69 : 617,641.74 = 112,308.62 : x
  2. Step 2: Convert to fraction form
    411,803.69/617,641.74 = 112,308.62/x
  3. Step 3: Cross multiply
    411,803.69x = 617,641.74 × 112,308.62
  4. Step 4: Simplify right side
    411,803.69x = 69,366,488,385.59
  5. Step 5: Solve for x
    x = 69,366,488,385.59/411,803.69
  6. Step 6: Final answer
    x = 168,445.53

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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.