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Finding the Fourth Proportional to 630,196.92, 943,074.90 and 393,651

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Solution

The fourth proportional to 630,196.92, 943,074.90 and 393,651 is: 589,089.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,196.92 : 943,074.90 = 393,651 : x
  2. Step 2: Convert to fraction form
    630,196.92/943,074.90 = 393,651/x
  3. Step 3: Cross multiply
    630,196.92x = 943,074.90 × 393,651
  4. Step 4: Simplify right side
    630,196.92x = 371,242,377,459.90
  5. Step 5: Solve for x
    x = 371,242,377,459.90/630,196.92
  6. Step 6: Final answer
    x = 589,089.48

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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.