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Finding the Fourth Proportional to 98,859.53, 136,435.92 and 56,424.44

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Solution

The fourth proportional to 98,859.53, 136,435.92 and 56,424.44 is: 77,871.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,859.53 : 136,435.92 = 56,424.44 : x
  2. Step 2: Convert to fraction form
    98,859.53/136,435.92 = 56,424.44/x
  3. Step 3: Cross multiply
    98,859.53x = 136,435.92 × 56,424.44
  4. Step 4: Simplify right side
    98,859.53x = 7,698,320,381.88
  5. Step 5: Solve for x
    x = 7,698,320,381.88/98,859.53
  6. Step 6: Final answer
    x = 77,871.30

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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.