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Finding the Fourth Proportional to 19,390.25, 26,894.54 and 18,602.93

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Solution

The fourth proportional to 19,390.25, 26,894.54 and 18,602.93 is: 25,802.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.25 : 26,894.54 = 18,602.93 : x
  2. Step 2: Convert to fraction form
    19,390.25/26,894.54 = 18,602.93/x
  3. Step 3: Cross multiply
    19,390.25x = 26,894.54 × 18,602.93
  4. Step 4: Simplify right side
    19,390.25x = 500,317,017.51
  5. Step 5: Solve for x
    x = 500,317,017.51/19,390.25
  6. Step 6: Final answer
    x = 25,802.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.