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Finding the Fourth Proportional to 1,749.90, 2,415.06 and 964.02

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Solution

The fourth proportional to 1,749.90, 2,415.06 and 964.02 is: 1,330.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,749.90 : 2,415.06 = 964.02 : x
  2. Step 2: Convert to fraction form
    1,749.90/2,415.06 = 964.02/x
  3. Step 3: Cross multiply
    1,749.90x = 2,415.06 × 964.02
  4. Step 4: Simplify right side
    1,749.90x = 2,328,166.14
  5. Step 5: Solve for x
    x = 2,328,166.14/1,749.90
  6. Step 6: Final answer
    x = 1,330.46

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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.