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Finding the Fourth Proportional to 91,318.98, 136,978.52 and 59,927.63

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Solution

The fourth proportional to 91,318.98, 136,978.52 and 59,927.63 is: 89,891.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,318.98 : 136,978.52 = 59,927.63 : x
  2. Step 2: Convert to fraction form
    91,318.98/136,978.52 = 59,927.63/x
  3. Step 3: Cross multiply
    91,318.98x = 136,978.52 × 59,927.63
  4. Step 4: Simplify right side
    91,318.98x = 8,208,798,064.51
  5. Step 5: Solve for x
    x = 8,208,798,064.51/91,318.98
  6. Step 6: Final answer
    x = 89,891.48

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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.