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Finding the Fourth Proportional to 92,928.91, 128,237.74 and 52,641.85

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Solution

The fourth proportional to 92,928.91, 128,237.74 and 52,641.85 is: 72,643.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,928.91 : 128,237.74 = 52,641.85 : x
  2. Step 2: Convert to fraction form
    92,928.91/128,237.74 = 52,641.85/x
  3. Step 3: Cross multiply
    92,928.91x = 128,237.74 × 52,641.85
  4. Step 4: Simplify right side
    92,928.91x = 6,750,671,873.42
  5. Step 5: Solve for x
    x = 6,750,671,873.42/92,928.91
  6. Step 6: Final answer
    x = 72,643.40

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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.