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Finding the Fourth Proportional to 38,308,302.50, 52,866,573.90 and 20,905,768.67

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Solution

The fourth proportional to 38,308,302.50, 52,866,573.90 and 20,905,768.67 is: 28,850,570.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,308,302.50 : 52,866,573.90 = 20,905,768.67 : x
  2. Step 2: Convert to fraction form
    38,308,302.50/52,866,573.90 = 20,905,768.67/x
  3. Step 3: Cross multiply
    38,308,302.50x = 52,866,573.90 × 20,905,768.67
  4. Step 4: Simplify right side
    38,308,302.50x = 1,105,216,364,328,859.75
  5. Step 5: Solve for x
    x = 1,105,216,364,328,859.75/38,308,302.50
  6. Step 6: Final answer
    x = 28,850,570.04

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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.