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Finding the Fourth Proportional to 98,809.92, 136,356.32 and 56,369.12

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Solution

The fourth proportional to 98,809.92, 136,356.32 and 56,369.12 is: 77,788.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,809.92 : 136,356.32 = 56,369.12 : x
  2. Step 2: Convert to fraction form
    98,809.92/136,356.32 = 56,369.12/x
  3. Step 3: Cross multiply
    98,809.92x = 136,356.32 × 56,369.12
  4. Step 4: Simplify right side
    98,809.92x = 7,686,285,764.84
  5. Step 5: Solve for x
    x = 7,686,285,764.84/98,809.92
  6. Step 6: Final answer
    x = 77,788.60

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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.