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Finding the Fourth Proportional to 99,698.68, 137,568.30 and 59,411.44

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Solution

The fourth proportional to 99,698.68, 137,568.30 and 59,411.44 is: 81,978.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,698.68 : 137,568.30 = 59,411.44 : x
  2. Step 2: Convert to fraction form
    99,698.68/137,568.30 = 59,411.44/x
  3. Step 3: Cross multiply
    99,698.68x = 137,568.30 × 59,411.44
  4. Step 4: Simplify right side
    99,698.68x = 8,173,130,801.35
  5. Step 5: Solve for x
    x = 8,173,130,801.35/99,698.68
  6. Step 6: Final answer
    x = 81,978.33

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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.