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Finding the Fourth Proportional to 18,693,669.60, 26,208,928.80 and 18,693,669.60

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Solution

The fourth proportional to 18,693,669.60, 26,208,928.80 and 18,693,669.60 is: 26,208,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693,669.60 : 26,208,928.80 = 18,693,669.60 : x
  2. Step 2: Convert to fraction form
    18,693,669.60/26,208,928.80 = 18,693,669.60/x
  3. Step 3: Cross multiply
    18,693,669.60x = 26,208,928.80 × 18,693,669.60
  4. Step 4: Simplify right side
    18,693,669.60x = 489,941,055,557,124.56
  5. Step 5: Solve for x
    x = 489,941,055,557,124.56/18,693,669.60
  6. Step 6: Final answer
    x = 26,208,928.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.