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Finding the Fourth Proportional to 28,555.23, 42,831.79 and 7,495.08

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Solution

The fourth proportional to 28,555.23, 42,831.79 and 7,495.08 is: 11,242.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.23 : 42,831.79 = 7,495.08 : x
  2. Step 2: Convert to fraction form
    28,555.23/42,831.79 = 7,495.08/x
  3. Step 3: Cross multiply
    28,555.23x = 42,831.79 × 7,495.08
  4. Step 4: Simplify right side
    28,555.23x = 321,027,754.17
  5. Step 5: Solve for x
    x = 321,027,754.17/28,555.23
  6. Step 6: Final answer
    x = 11,242.34

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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.