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Finding the Fourth Proportional to 66,428.51, 99,549.51 and 36,365.46

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Solution

The fourth proportional to 66,428.51, 99,549.51 and 36,365.46 is: 54,497.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,428.51 : 99,549.51 = 36,365.46 : x
  2. Step 2: Convert to fraction form
    66,428.51/99,549.51 = 36,365.46/x
  3. Step 3: Cross multiply
    66,428.51x = 99,549.51 × 36,365.46
  4. Step 4: Simplify right side
    66,428.51x = 3,620,163,214.24
  5. Step 5: Solve for x
    x = 3,620,163,214.24/66,428.51
  6. Step 6: Final answer
    x = 54,497.14

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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.