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Finding the Fourth Proportional to 911,230.56, 1,257,490.27 and 503,360.88

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Solution

The fourth proportional to 911,230.56, 1,257,490.27 and 503,360.88 is: 694,633.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,230.56 : 1,257,490.27 = 503,360.88 : x
  2. Step 2: Convert to fraction form
    911,230.56/1,257,490.27 = 503,360.88/x
  3. Step 3: Cross multiply
    911,230.56x = 1,257,490.27 × 503,360.88
  4. Step 4: Simplify right side
    911,230.56x = 632,971,411,885.63
  5. Step 5: Solve for x
    x = 632,971,411,885.63/911,230.56
  6. Step 6: Final answer
    x = 694,633.65

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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.