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Finding the Fourth Proportional to 7,047.60, 9,724.88 and 4,063.40

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Solution

The fourth proportional to 7,047.60, 9,724.88 and 4,063.40 is: 5,607.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,047.60 : 9,724.88 = 4,063.40 : x
  2. Step 2: Convert to fraction form
    7,047.60/9,724.88 = 4,063.40/x
  3. Step 3: Cross multiply
    7,047.60x = 9,724.88 × 4,063.40
  4. Step 4: Simplify right side
    7,047.60x = 39,516,077.39
  5. Step 5: Solve for x
    x = 39,516,077.39/7,047.60
  6. Step 6: Final answer
    x = 5,607.03

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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.