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Finding the Fourth Proportional to 86,505.84, 129,712.52 and 44,368.74

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Solution

The fourth proportional to 86,505.84, 129,712.52 and 44,368.74 is: 66,529.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,505.84 : 129,712.52 = 44,368.74 : x
  2. Step 2: Convert to fraction form
    86,505.84/129,712.52 = 44,368.74/x
  3. Step 3: Cross multiply
    86,505.84x = 129,712.52 × 44,368.74
  4. Step 4: Simplify right side
    86,505.84x = 5,755,181,185.55
  5. Step 5: Solve for x
    x = 5,755,181,185.55/86,505.84
  6. Step 6: Final answer
    x = 66,529.39

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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.