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Finding the Fourth Proportional to 859,892.50, 1,186,643.04 and 477,911.08

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Solution

The fourth proportional to 859,892.50, 1,186,643.04 and 477,911.08 is: 659,512.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,892.50 : 1,186,643.04 = 477,911.08 : x
  2. Step 2: Convert to fraction form
    859,892.50/1,186,643.04 = 477,911.08/x
  3. Step 3: Cross multiply
    859,892.50x = 1,186,643.04 × 477,911.08
  4. Step 4: Simplify right side
    859,892.50x = 567,109,856,820.88
  5. Step 5: Solve for x
    x = 567,109,856,820.88/859,892.50
  6. Step 6: Final answer
    x = 659,512.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.