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Finding the Fourth Proportional to 1,152.76, 1,725.90 and 1,036.12

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Solution

The fourth proportional to 1,152.76, 1,725.90 and 1,036.12 is: 1,551.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152.76 : 1,725.90 = 1,036.12 : x
  2. Step 2: Convert to fraction form
    1,152.76/1,725.90 = 1,036.12/x
  3. Step 3: Cross multiply
    1,152.76x = 1,725.90 × 1,036.12
  4. Step 4: Simplify right side
    1,152.76x = 1,788,239.51
  5. Step 5: Solve for x
    x = 1,788,239.51/1,152.76
  6. Step 6: Final answer
    x = 1,551.27

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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.