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Finding the Fourth Proportional to 14,152.56, 19,529.64 and 7,864.56

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Solution

The fourth proportional to 14,152.56, 19,529.64 and 7,864.56 is: 10,852.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,152.56 : 19,529.64 = 7,864.56 : x
  2. Step 2: Convert to fraction form
    14,152.56/19,529.64 = 7,864.56/x
  3. Step 3: Cross multiply
    14,152.56x = 19,529.64 × 7,864.56
  4. Step 4: Simplify right side
    14,152.56x = 153,592,025.56
  5. Step 5: Solve for x
    x = 153,592,025.56/14,152.56
  6. Step 6: Final answer
    x = 10,852.60

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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.