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Finding the Fourth Proportional to 93,447.42, 128,943.50 and 52,605.65

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Solution

The fourth proportional to 93,447.42, 128,943.50 and 52,605.65 is: 72,587.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,447.42 : 128,943.50 = 52,605.65 : x
  2. Step 2: Convert to fraction form
    93,447.42/128,943.50 = 52,605.65/x
  3. Step 3: Cross multiply
    93,447.42x = 128,943.50 × 52,605.65
  4. Step 4: Simplify right side
    93,447.42x = 6,783,156,690.11
  5. Step 5: Solve for x
    x = 6,783,156,690.11/93,447.42
  6. Step 6: Final answer
    x = 72,587.95

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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.