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Finding the Fourth Proportional to 49,624.65, 74,436.84 and 12,688.65

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Solution

The fourth proportional to 49,624.65, 74,436.84 and 12,688.65 is: 19,032.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,624.65 : 74,436.84 = 12,688.65 : x
  2. Step 2: Convert to fraction form
    49,624.65/74,436.84 = 12,688.65/x
  3. Step 3: Cross multiply
    49,624.65x = 74,436.84 × 12,688.65
  4. Step 4: Simplify right side
    49,624.65x = 944,503,009.87
  5. Step 5: Solve for x
    x = 944,503,009.87/49,624.65
  6. Step 6: Final answer
    x = 19,032.94

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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.