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Finding the Fourth Proportional to 92,920.68, 128,233.80 and 52,635.60

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Solution

The fourth proportional to 92,920.68, 128,233.80 and 52,635.60 is: 72,638.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,920.68 : 128,233.80 = 52,635.60 : x
  2. Step 2: Convert to fraction form
    92,920.68/128,233.80 = 52,635.60/x
  3. Step 3: Cross multiply
    92,920.68x = 128,233.80 × 52,635.60
  4. Step 4: Simplify right side
    92,920.68x = 6,749,663,003.28
  5. Step 5: Solve for x
    x = 6,749,663,003.28/92,920.68
  6. Step 6: Final answer
    x = 72,638.98

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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.