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Finding the Fourth Proportional to 7,157.56, 9,875.80 and 4,503.32

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Solution

The fourth proportional to 7,157.56, 9,875.80 and 4,503.32 is: 6,213.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.56 : 9,875.80 = 4,503.32 : x
  2. Step 2: Convert to fraction form
    7,157.56/9,875.80 = 4,503.32/x
  3. Step 3: Cross multiply
    7,157.56x = 9,875.80 × 4,503.32
  4. Step 4: Simplify right side
    7,157.56x = 44,473,827.02
  5. Step 5: Solve for x
    x = 44,473,827.02/7,157.56
  6. Step 6: Final answer
    x = 6,213.55

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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.