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Finding the Fourth Proportional to 642,774.45, 886,730.58 and 451,900.38

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Solution

The fourth proportional to 642,774.45, 886,730.58 and 451,900.38 is: 623,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,774.45 : 886,730.58 = 451,900.38 : x
  2. Step 2: Convert to fraction form
    642,774.45/886,730.58 = 451,900.38/x
  3. Step 3: Cross multiply
    642,774.45x = 886,730.58 × 451,900.38
  4. Step 4: Simplify right side
    642,774.45x = 400,713,886,059.62
  5. Step 5: Solve for x
    x = 400,713,886,059.62/642,774.45
  6. Step 6: Final answer
    x = 623,412.90

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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.