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Finding the Fourth Proportional to 4,693.75, 7,041.68 and 1,920.05

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Solution

The fourth proportional to 4,693.75, 7,041.68 and 1,920.05 is: 2,880.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,693.75 : 7,041.68 = 1,920.05 : x
  2. Step 2: Convert to fraction form
    4,693.75/7,041.68 = 1,920.05/x
  3. Step 3: Cross multiply
    4,693.75x = 7,041.68 × 1,920.05
  4. Step 4: Simplify right side
    4,693.75x = 13,520,416.89
  5. Step 5: Solve for x
    x = 13,520,416.89/4,693.75
  6. Step 6: Final answer
    x = 2,880.52

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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.