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Finding the Fourth Proportional to 14,203.69, 19,601.70 and 7,916.06

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Solution

The fourth proportional to 14,203.69, 19,601.70 and 7,916.06 is: 10,924.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,203.69 : 19,601.70 = 7,916.06 : x
  2. Step 2: Convert to fraction form
    14,203.69/19,601.70 = 7,916.06/x
  3. Step 3: Cross multiply
    14,203.69x = 19,601.70 × 7,916.06
  4. Step 4: Simplify right side
    14,203.69x = 155,168,252.62
  5. Step 5: Solve for x
    x = 155,168,252.62/14,203.69
  6. Step 6: Final answer
    x = 10,924.50

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1.5x scale

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.