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Finding the Fourth Proportional to 18,903,657.60, 28,292,500.80 and 17,392,003.20

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Solution

The fourth proportional to 18,903,657.60, 28,292,500.80 and 17,392,003.20 is: 26,030,055.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,903,657.60 : 28,292,500.80 = 17,392,003.20 : x
  2. Step 2: Convert to fraction form
    18,903,657.60/28,292,500.80 = 17,392,003.20/x
  3. Step 3: Cross multiply
    18,903,657.60x = 28,292,500.80 × 17,392,003.20
  4. Step 4: Simplify right side
    18,903,657.60x = 492,063,264,449,602.56
  5. Step 5: Solve for x
    x = 492,063,264,449,602.56/18,903,657.60
  6. Step 6: Final answer
    x = 26,030,055.92

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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.