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Finding the Fourth Proportional to 817,692.80, 1,224,206.40 and 502,764.80

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Solution

The fourth proportional to 817,692.80, 1,224,206.40 and 502,764.80 is: 752,712.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,692.80 : 1,224,206.40 = 502,764.80 : x
  2. Step 2: Convert to fraction form
    817,692.80/1,224,206.40 = 502,764.80/x
  3. Step 3: Cross multiply
    817,692.80x = 1,224,206.40 × 502,764.80
  4. Step 4: Simplify right side
    817,692.80x = 615,487,885,854.72
  5. Step 5: Solve for x
    x = 615,487,885,854.72/817,692.80
  6. Step 6: Final answer
    x = 752,712.86

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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.