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Finding the Fourth Proportional to 260,547.90, 391,113.45 and 201,644.70

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Solution

The fourth proportional to 260,547.90, 391,113.45 and 201,644.70 is: 302,692.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,547.90 : 391,113.45 = 201,644.70 : x
  2. Step 2: Convert to fraction form
    260,547.90/391,113.45 = 201,644.70/x
  3. Step 3: Cross multiply
    260,547.90x = 391,113.45 × 201,644.70
  4. Step 4: Simplify right side
    260,547.90x = 78,865,954,291.22
  5. Step 5: Solve for x
    x = 78,865,954,291.22/260,547.90
  6. Step 6: Final answer
    x = 302,692.73

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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.