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Finding the Fourth Proportional to 92,923.40, 128,339.70 and 62,656.54

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Solution

The fourth proportional to 92,923.40, 128,339.70 and 62,656.54 is: 86,537.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,923.40 : 128,339.70 = 62,656.54 : x
  2. Step 2: Convert to fraction form
    92,923.40/128,339.70 = 62,656.54/x
  3. Step 3: Cross multiply
    92,923.40x = 128,339.70 × 62,656.54
  4. Step 4: Simplify right side
    92,923.40x = 8,041,321,546.64
  5. Step 5: Solve for x
    x = 8,041,321,546.64/92,923.40
  6. Step 6: Final answer
    x = 86,537.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.