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Finding the Fourth Proportional to 92,804.16, 128,024.64 and 55,051.68

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Solution

The fourth proportional to 92,804.16, 128,024.64 and 55,051.68 is: 75,944.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,804.16 : 128,024.64 = 55,051.68 : x
  2. Step 2: Convert to fraction form
    92,804.16/128,024.64 = 55,051.68/x
  3. Step 3: Cross multiply
    92,804.16x = 128,024.64 × 55,051.68
  4. Step 4: Simplify right side
    92,804.16x = 7,047,971,513.40
  5. Step 5: Solve for x
    x = 7,047,971,513.40/92,804.16
  6. Step 6: Final answer
    x = 75,944.56

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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.