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Finding the Fourth Proportional to 1,572.12, 2,358.05 and 955.67

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Solution

The fourth proportional to 1,572.12, 2,358.05 and 955.67 is: 1,433.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.12 : 2,358.05 = 955.67 : x
  2. Step 2: Convert to fraction form
    1,572.12/2,358.05 = 955.67/x
  3. Step 3: Cross multiply
    1,572.12x = 2,358.05 × 955.67
  4. Step 4: Simplify right side
    1,572.12x = 2,253,501.07
  5. Step 5: Solve for x
    x = 2,253,501.07/1,572.12
  6. Step 6: Final answer
    x = 1,433.42

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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.