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Finding the Fourth Proportional to 92,909.19, 128,211.75 and 52,626.68

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Solution

The fourth proportional to 92,909.19, 128,211.75 and 52,626.68 is: 72,623.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,909.19 : 128,211.75 = 52,626.68 : x
  2. Step 2: Convert to fraction form
    92,909.19/128,211.75 = 52,626.68/x
  3. Step 3: Cross multiply
    92,909.19x = 128,211.75 × 52,626.68
  4. Step 4: Simplify right side
    92,909.19x = 6,747,358,098.43
  5. Step 5: Solve for x
    x = 6,747,358,098.43/92,909.19
  6. Step 6: Final answer
    x = 72,623.15

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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.