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Finding the Fourth Proportional to 4,668.50, 7,003.95 and 1,590.50

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Solution

The fourth proportional to 4,668.50, 7,003.95 and 1,590.50 is: 2,386.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,668.50 : 7,003.95 = 1,590.50 : x
  2. Step 2: Convert to fraction form
    4,668.50/7,003.95 = 1,590.50/x
  3. Step 3: Cross multiply
    4,668.50x = 7,003.95 × 1,590.50
  4. Step 4: Simplify right side
    4,668.50x = 11,139,782.48
  5. Step 5: Solve for x
    x = 11,139,782.48/4,668.50
  6. Step 6: Final answer
    x = 2,386.16

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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.