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Finding the Fourth Proportional to 37,715.79, 52,047.81 and 20,948.79

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Solution

The fourth proportional to 37,715.79, 52,047.81 and 20,948.79 is: 28,909.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,715.79 : 52,047.81 = 20,948.79 : x
  2. Step 2: Convert to fraction form
    37,715.79/52,047.81 = 20,948.79/x
  3. Step 3: Cross multiply
    37,715.79x = 52,047.81 × 20,948.79
  4. Step 4: Simplify right side
    37,715.79x = 1,090,338,641.65
  5. Step 5: Solve for x
    x = 1,090,338,641.65/37,715.79
  6. Step 6: Final answer
    x = 28,909.34

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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.