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Finding the Fourth Proportional to 66,503.84, 99,755.88 and 53,261.07

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Solution

The fourth proportional to 66,503.84, 99,755.88 and 53,261.07 is: 79,891.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,503.84 : 99,755.88 = 53,261.07 : x
  2. Step 2: Convert to fraction form
    66,503.84/99,755.88 = 53,261.07/x
  3. Step 3: Cross multiply
    66,503.84x = 99,755.88 × 53,261.07
  4. Step 4: Simplify right side
    66,503.84x = 5,313,104,275.66
  5. Step 5: Solve for x
    x = 5,313,104,275.66/66,503.84
  6. Step 6: Final answer
    x = 79,891.69

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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.