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Finding the Fourth Proportional to 211,485.84, 317,311.80 and 93,074.12

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Solution

The fourth proportional to 211,485.84, 317,311.80 and 93,074.12 is: 139,647.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,485.84 : 317,311.80 = 93,074.12 : x
  2. Step 2: Convert to fraction form
    211,485.84/317,311.80 = 93,074.12/x
  3. Step 3: Cross multiply
    211,485.84x = 317,311.80 × 93,074.12
  4. Step 4: Simplify right side
    211,485.84x = 29,533,516,550.62
  5. Step 5: Solve for x
    x = 29,533,516,550.62/211,485.84
  6. Step 6: Final answer
    x = 139,647.73

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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.