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Finding the Fourth Proportional to 92,909.93, 139,364.90 and 40,318.25

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Solution

The fourth proportional to 92,909.93, 139,364.90 and 40,318.25 is: 60,477.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,909.93 : 139,364.90 = 40,318.25 : x
  2. Step 2: Convert to fraction form
    92,909.93/139,364.90 = 40,318.25/x
  3. Step 3: Cross multiply
    92,909.93x = 139,364.90 × 40,318.25
  4. Step 4: Simplify right side
    92,909.93x = 5,618,948,677.83
  5. Step 5: Solve for x
    x = 5,618,948,677.83/92,909.93
  6. Step 6: Final answer
    x = 60,477.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.