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Finding the Fourth Proportional to 192,457,809.60, 288,686,714.40 and 191,324,068.80

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Solution

The fourth proportional to 192,457,809.60, 288,686,714.40 and 191,324,068.80 is: 286,986,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,457,809.60 : 288,686,714.40 = 191,324,068.80 : x
  2. Step 2: Convert to fraction form
    192,457,809.60/288,686,714.40 = 191,324,068.80/x
  3. Step 3: Cross multiply
    192,457,809.60x = 288,686,714.40 × 191,324,068.80
  4. Step 4: Simplify right side
    192,457,809.60x = 55,232,716,807,511,552
  5. Step 5: Solve for x
    x = 55,232,716,807,511,552/192,457,809.60
  6. Step 6: Final answer
    x = 286,986,103.20

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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.