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Finding the Fourth Proportional to 557,402.90, 836,104.35 and 520,078.10

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Solution

The fourth proportional to 557,402.90, 836,104.35 and 520,078.10 is: 780,117.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,402.90 : 836,104.35 = 520,078.10 : x
  2. Step 2: Convert to fraction form
    557,402.90/836,104.35 = 520,078.10/x
  3. Step 3: Cross multiply
    557,402.90x = 836,104.35 × 520,078.10
  4. Step 4: Simplify right side
    557,402.90x = 434,839,561,749.74
  5. Step 5: Solve for x
    x = 434,839,561,749.74/557,402.90
  6. Step 6: Final answer
    x = 780,117.15

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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.