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Finding the Fourth Proportional to 14,038.88, 21,058.86 and 4,678.52

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Solution

The fourth proportional to 14,038.88, 21,058.86 and 4,678.52 is: 7,017.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,038.88 : 21,058.86 = 4,678.52 : x
  2. Step 2: Convert to fraction form
    14,038.88/21,058.86 = 4,678.52/x
  3. Step 3: Cross multiply
    14,038.88x = 21,058.86 × 4,678.52
  4. Step 4: Simplify right side
    14,038.88x = 98,524,297.69
  5. Step 5: Solve for x
    x = 98,524,297.69/14,038.88
  6. Step 6: Final answer
    x = 7,017.96

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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.