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Finding the Fourth Proportional to 366,920.15, 512,638.45 and 366,920.15

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Solution

The fourth proportional to 366,920.15, 512,638.45 and 366,920.15 is: 512,638.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,920.15 : 512,638.45 = 366,920.15 : x
  2. Step 2: Convert to fraction form
    366,920.15/512,638.45 = 366,920.15/x
  3. Step 3: Cross multiply
    366,920.15x = 512,638.45 × 366,920.15
  4. Step 4: Simplify right side
    366,920.15x = 188,097,376,969.77
  5. Step 5: Solve for x
    x = 188,097,376,969.77/366,920.15
  6. Step 6: Final answer
    x = 512,638.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.