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Finding the Fourth Proportional to 92,893.96, 128,246.80 and 61,155.12

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Solution

The fourth proportional to 92,893.96, 128,246.80 and 61,155.12 is: 84,429.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,893.96 : 128,246.80 = 61,155.12 : x
  2. Step 2: Convert to fraction form
    92,893.96/128,246.80 = 61,155.12/x
  3. Step 3: Cross multiply
    92,893.96x = 128,246.80 × 61,155.12
  4. Step 4: Simplify right side
    92,893.96x = 7,842,948,443.62
  5. Step 5: Solve for x
    x = 7,842,948,443.62/92,893.96
  6. Step 6: Final answer
    x = 84,429.05

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1.5x scale

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.