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Finding the Fourth Proportional to 914.47, 1,261.52 and 652.03

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Solution

The fourth proportional to 914.47, 1,261.52 and 652.03 is: 899.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.47 : 1,261.52 = 652.03 : x
  2. Step 2: Convert to fraction form
    914.47/1,261.52 = 652.03/x
  3. Step 3: Cross multiply
    914.47x = 1,261.52 × 652.03
  4. Step 4: Simplify right side
    914.47x = 822,545.63
  5. Step 5: Solve for x
    x = 822,545.63/914.47
  6. Step 6: Final answer
    x = 899.48

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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.