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Finding the Fourth Proportional to 869,498.88, 1,199,920.71 and 525,286.95

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Solution

The fourth proportional to 869,498.88, 1,199,920.71 and 525,286.95 is: 724,903.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,498.88 : 1,199,920.71 = 525,286.95 : x
  2. Step 2: Convert to fraction form
    869,498.88/1,199,920.71 = 525,286.95/x
  3. Step 3: Cross multiply
    869,498.88x = 1,199,920.71 × 525,286.95
  4. Step 4: Simplify right side
    869,498.88x = 630,302,689,997.73
  5. Step 5: Solve for x
    x = 630,302,689,997.73/869,498.88
  6. Step 6: Final answer
    x = 724,903.39

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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.