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Finding the Fourth Proportional to 28,562.60, 42,831.10 and 11,026.60

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Solution

The fourth proportional to 28,562.60, 42,831.10 and 11,026.60 is: 16,534.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,562.60 : 42,831.10 = 11,026.60 : x
  2. Step 2: Convert to fraction form
    28,562.60/42,831.10 = 11,026.60/x
  3. Step 3: Cross multiply
    28,562.60x = 42,831.10 × 11,026.60
  4. Step 4: Simplify right side
    28,562.60x = 472,281,407.26
  5. Step 5: Solve for x
    x = 472,281,407.26/28,562.60
  6. Step 6: Final answer
    x = 16,534.96

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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.