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Finding the Fourth Proportional to 5,415.56, 7,473.48 and 2,931.56

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Solution

The fourth proportional to 5,415.56, 7,473.48 and 2,931.56 is: 4,045.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.56 : 7,473.48 = 2,931.56 : x
  2. Step 2: Convert to fraction form
    5,415.56/7,473.48 = 2,931.56/x
  3. Step 3: Cross multiply
    5,415.56x = 7,473.48 × 2,931.56
  4. Step 4: Simplify right side
    5,415.56x = 21,908,955.03
  5. Step 5: Solve for x
    x = 21,908,955.03/5,415.56
  6. Step 6: Final answer
    x = 4,045.56

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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.