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Finding the Fourth Proportional to 823,770.60, 1,235,655.90 and 291,287.40

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Solution

The fourth proportional to 823,770.60, 1,235,655.90 and 291,287.40 is: 436,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,770.60 : 1,235,655.90 = 291,287.40 : x
  2. Step 2: Convert to fraction form
    823,770.60/1,235,655.90 = 291,287.40/x
  3. Step 3: Cross multiply
    823,770.60x = 1,235,655.90 × 291,287.40
  4. Step 4: Simplify right side
    823,770.60x = 359,930,994,405.66
  5. Step 5: Solve for x
    x = 359,930,994,405.66/823,770.60
  6. Step 6: Final answer
    x = 436,931.10

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1.5x scale

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.