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Finding the Fourth Proportional to 28,875.76, 39,848.43 and 16,300.42

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Solution

The fourth proportional to 28,875.76, 39,848.43 and 16,300.42 is: 22,494.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,875.76 : 39,848.43 = 16,300.42 : x
  2. Step 2: Convert to fraction form
    28,875.76/39,848.43 = 16,300.42/x
  3. Step 3: Cross multiply
    28,875.76x = 39,848.43 × 16,300.42
  4. Step 4: Simplify right side
    28,875.76x = 649,546,145.34
  5. Step 5: Solve for x
    x = 649,546,145.34/28,875.76
  6. Step 6: Final answer
    x = 22,494.51

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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.