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Finding the Fourth Proportional to 1,248.21, 1,870.92 and 467.46

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Solution

The fourth proportional to 1,248.21, 1,870.92 and 467.46 is: 700.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.21 : 1,870.92 = 467.46 : x
  2. Step 2: Convert to fraction form
    1,248.21/1,870.92 = 467.46/x
  3. Step 3: Cross multiply
    1,248.21x = 1,870.92 × 467.46
  4. Step 4: Simplify right side
    1,248.21x = 874,580.26
  5. Step 5: Solve for x
    x = 874,580.26/1,248.21
  6. Step 6: Final answer
    x = 700.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.