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Finding the Fourth Proportional to 411,360.14, 617,117.45 and 186,736.34

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Solution

The fourth proportional to 411,360.14, 617,117.45 and 186,736.34 is: 280,139.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,360.14 : 617,117.45 = 186,736.34 : x
  2. Step 2: Convert to fraction form
    411,360.14/617,117.45 = 186,736.34/x
  3. Step 3: Cross multiply
    411,360.14x = 617,117.45 × 186,736.34
  4. Step 4: Simplify right side
    411,360.14x = 115,238,249,943.86
  5. Step 5: Solve for x
    x = 115,238,249,943.86/411,360.14
  6. Step 6: Final answer
    x = 280,139.57

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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.