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Finding the Fourth Proportional to 805,257, 1,208,279.14 and 570,110.76

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Solution

The fourth proportional to 805,257, 1,208,279.14 and 570,110.76 is: 855,444.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,257 : 1,208,279.14 = 570,110.76 : x
  2. Step 2: Convert to fraction form
    805,257/1,208,279.14 = 570,110.76/x
  3. Step 3: Cross multiply
    805,257x = 1,208,279.14 × 570,110.76
  4. Step 4: Simplify right side
    805,257x = 688,852,938,797.55
  5. Step 5: Solve for x
    x = 688,852,938,797.55/805,257
  6. Step 6: Final answer
    x = 855,444.83

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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.