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Finding the Fourth Proportional to 318,518.83, 477,780.67 and 116,259.90

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Solution

The fourth proportional to 318,518.83, 477,780.67 and 116,259.90 is: 174,390.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,518.83 : 477,780.67 = 116,259.90 : x
  2. Step 2: Convert to fraction form
    318,518.83/477,780.67 = 116,259.90/x
  3. Step 3: Cross multiply
    318,518.83x = 477,780.67 × 116,259.90
  4. Step 4: Simplify right side
    318,518.83x = 55,546,732,916.13
  5. Step 5: Solve for x
    x = 55,546,732,916.13/318,518.83
  6. Step 6: Final answer
    x = 174,390.74

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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.