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Finding the Fourth Proportional to 14,407.57, 19,898.99 and 9,619.17

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Solution

The fourth proportional to 14,407.57, 19,898.99 and 9,619.17 is: 13,285.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,407.57 : 19,898.99 = 9,619.17 : x
  2. Step 2: Convert to fraction form
    14,407.57/19,898.99 = 9,619.17/x
  3. Step 3: Cross multiply
    14,407.57x = 19,898.99 × 9,619.17
  4. Step 4: Simplify right side
    14,407.57x = 191,411,767.64
  5. Step 5: Solve for x
    x = 191,411,767.64/14,407.57
  6. Step 6: Final answer
    x = 13,285.50

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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.