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Finding the Fourth Proportional to 19,509.88, 26,923.56 and 10,557.40

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Solution

The fourth proportional to 19,509.88, 26,923.56 and 10,557.40 is: 14,569.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,509.88 : 26,923.56 = 10,557.40 : x
  2. Step 2: Convert to fraction form
    19,509.88/26,923.56 = 10,557.40/x
  3. Step 3: Cross multiply
    19,509.88x = 26,923.56 × 10,557.40
  4. Step 4: Simplify right side
    19,509.88x = 284,242,792.34
  5. Step 5: Solve for x
    x = 284,242,792.34/19,509.88
  6. Step 6: Final answer
    x = 14,569.17

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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.