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Finding the Fourth Proportional to 7,225.64, 9,975.68 and 4,575.32

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Solution

The fourth proportional to 7,225.64, 9,975.68 and 4,575.32 is: 6,316.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,225.64 : 9,975.68 = 4,575.32 : x
  2. Step 2: Convert to fraction form
    7,225.64/9,975.68 = 4,575.32/x
  3. Step 3: Cross multiply
    7,225.64x = 9,975.68 × 4,575.32
  4. Step 4: Simplify right side
    7,225.64x = 45,641,928.22
  5. Step 5: Solve for x
    x = 45,641,928.22/7,225.64
  6. Step 6: Final answer
    x = 6,316.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.