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Finding the Fourth Proportional to 642,098.36, 886,104.96 and 370,161.20

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Solution

The fourth proportional to 642,098.36, 886,104.96 and 370,161.20 is: 510,827.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,098.36 : 886,104.96 = 370,161.20 : x
  2. Step 2: Convert to fraction form
    642,098.36/886,104.96 = 370,161.20/x
  3. Step 3: Cross multiply
    642,098.36x = 886,104.96 × 370,161.20
  4. Step 4: Simplify right side
    642,098.36x = 328,001,675,319.55
  5. Step 5: Solve for x
    x = 328,001,675,319.55/642,098.36
  6. Step 6: Final answer
    x = 510,827.77

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1.5x scale

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.