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Finding the Fourth Proportional to 51,230.32, 70,703.88 and 28,572.88

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Solution

The fourth proportional to 51,230.32, 70,703.88 and 28,572.88 is: 39,433.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,230.32 : 70,703.88 = 28,572.88 : x
  2. Step 2: Convert to fraction form
    51,230.32/70,703.88 = 28,572.88/x
  3. Step 3: Cross multiply
    51,230.32x = 70,703.88 × 28,572.88
  4. Step 4: Simplify right side
    51,230.32x = 2,020,213,478.77
  5. Step 5: Solve for x
    x = 2,020,213,478.77/51,230.32
  6. Step 6: Final answer
    x = 39,433.94

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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.