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Finding the Fourth Proportional to 66,609.64, 99,428.53 and 58,202

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Solution

The fourth proportional to 66,609.64, 99,428.53 and 58,202 is: 86,878.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,609.64 : 99,428.53 = 58,202 : x
  2. Step 2: Convert to fraction form
    66,609.64/99,428.53 = 58,202/x
  3. Step 3: Cross multiply
    66,609.64x = 99,428.53 × 58,202
  4. Step 4: Simplify right side
    66,609.64x = 5,786,939,303.06
  5. Step 5: Solve for x
    x = 5,786,939,303.06/66,609.64
  6. Step 6: Final answer
    x = 86,878.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.