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Finding the Fourth Proportional to 92,991.61, 128,325.72 and 52,709.08

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Solution

The fourth proportional to 92,991.61, 128,325.72 and 52,709.08 is: 72,737.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,991.61 : 128,325.72 = 52,709.08 : x
  2. Step 2: Convert to fraction form
    92,991.61/128,325.72 = 52,709.08/x
  3. Step 3: Cross multiply
    92,991.61x = 128,325.72 × 52,709.08
  4. Step 4: Simplify right side
    92,991.61x = 6,763,930,641.54
  5. Step 5: Solve for x
    x = 6,763,930,641.54/92,991.61
  6. Step 6: Final answer
    x = 72,737.00

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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.