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Finding the Fourth Proportional to 100,714,531.20, 151,071,796.80 and 92,988,297.60

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Solution

The fourth proportional to 100,714,531.20, 151,071,796.80 and 92,988,297.60 is: 139,482,446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,714,531.20 : 151,071,796.80 = 92,988,297.60 : x
  2. Step 2: Convert to fraction form
    100,714,531.20/151,071,796.80 = 92,988,297.60/x
  3. Step 3: Cross multiply
    100,714,531.20x = 151,071,796.80 × 92,988,297.60
  4. Step 4: Simplify right side
    100,714,531.20x = 14,047,909,199,805,128
  5. Step 5: Solve for x
    x = 14,047,909,199,805,128/100,714,531.20
  6. Step 6: Final answer
    x = 139,482,446.40

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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.