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Finding the Fourth Proportional to 85,211.76, 127,817.72 and 46,018.08

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Solution

The fourth proportional to 85,211.76, 127,817.72 and 46,018.08 is: 69,027.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211.76 : 127,817.72 = 46,018.08 : x
  2. Step 2: Convert to fraction form
    85,211.76/127,817.72 = 46,018.08/x
  3. Step 3: Cross multiply
    85,211.76x = 127,817.72 × 46,018.08
  4. Step 4: Simplify right side
    85,211.76x = 5,881,926,064.38
  5. Step 5: Solve for x
    x = 5,881,926,064.38/85,211.76
  6. Step 6: Final answer
    x = 69,027.16

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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.