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Finding the Fourth Proportional to 67,987.16, 93,489.54 and 59,018.98

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Solution

The fourth proportional to 67,987.16, 93,489.54 and 59,018.98 is: 81,157.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,987.16 : 93,489.54 = 59,018.98 : x
  2. Step 2: Convert to fraction form
    67,987.16/93,489.54 = 59,018.98/x
  3. Step 3: Cross multiply
    67,987.16x = 93,489.54 × 59,018.98
  4. Step 4: Simplify right side
    67,987.16x = 5,517,657,291.47
  5. Step 5: Solve for x
    x = 5,517,657,291.47/67,987.16
  6. Step 6: Final answer
    x = 81,157.34

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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.