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Finding the Fourth Proportional to 383,168.19, 528,772.11 and 213,402.30

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Solution

The fourth proportional to 383,168.19, 528,772.11 and 213,402.30 is: 294,495.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,168.19 : 528,772.11 = 213,402.30 : x
  2. Step 2: Convert to fraction form
    383,168.19/528,772.11 = 213,402.30/x
  3. Step 3: Cross multiply
    383,168.19x = 528,772.11 × 213,402.30
  4. Step 4: Simplify right side
    383,168.19x = 112,841,184,449.85
  5. Step 5: Solve for x
    x = 112,841,184,449.85/383,168.19
  6. Step 6: Final answer
    x = 294,495.18

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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.