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Finding the Fourth Proportional to 77,855.34, 116,783 and 18,691.01

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Solution

The fourth proportional to 77,855.34, 116,783 and 18,691.01 is: 28,036.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,855.34 : 116,783 = 18,691.01 : x
  2. Step 2: Convert to fraction form
    77,855.34/116,783 = 18,691.01/x
  3. Step 3: Cross multiply
    77,855.34x = 116,783 × 18,691.01
  4. Step 4: Simplify right side
    77,855.34x = 2,182,792,220.83
  5. Step 5: Solve for x
    x = 2,182,792,220.83/77,855.34
  6. Step 6: Final answer
    x = 28,036.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.