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Finding the Fourth Proportional to 1,152.90, 1,590.03 and 1,033.22

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Solution

The fourth proportional to 1,152.90, 1,590.03 and 1,033.22 is: 1,424.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152.90 : 1,590.03 = 1,033.22 : x
  2. Step 2: Convert to fraction form
    1,152.90/1,590.03 = 1,033.22/x
  3. Step 3: Cross multiply
    1,152.90x = 1,590.03 × 1,033.22
  4. Step 4: Simplify right side
    1,152.90x = 1,642,854.77
  5. Step 5: Solve for x
    x = 1,642,854.77/1,152.90
  6. Step 6: Final answer
    x = 1,424.98

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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.