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Finding the Fourth Proportional to 603,853.92, 905,618.88 and 287,681.76

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Solution

The fourth proportional to 603,853.92, 905,618.88 and 287,681.76 is: 431,445.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,853.92 : 905,618.88 = 287,681.76 : x
  2. Step 2: Convert to fraction form
    603,853.92/905,618.88 = 287,681.76/x
  3. Step 3: Cross multiply
    603,853.92x = 905,618.88 × 287,681.76
  4. Step 4: Simplify right side
    603,853.92x = 260,530,033,287.63
  5. Step 5: Solve for x
    x = 260,530,033,287.63/603,853.92
  6. Step 6: Final answer
    x = 431,445.46

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1.5x scale

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.