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Finding the Fourth Proportional to 19,394.69, 26,762.58 and 13,019.99

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Solution

The fourth proportional to 19,394.69, 26,762.58 and 13,019.99 is: 17,966.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,394.69 : 26,762.58 = 13,019.99 : x
  2. Step 2: Convert to fraction form
    19,394.69/26,762.58 = 13,019.99/x
  3. Step 3: Cross multiply
    19,394.69x = 26,762.58 × 13,019.99
  4. Step 4: Simplify right side
    19,394.69x = 348,448,390.16
  5. Step 5: Solve for x
    x = 348,448,390.16/19,394.69
  6. Step 6: Final answer
    x = 17,966.18

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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.