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Finding the Fourth Proportional to 191,651,230.40, 287,476,845.60 and 70,457,604.80

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Solution

The fourth proportional to 191,651,230.40, 287,476,845.60 and 70,457,604.80 is: 105,686,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,651,230.40 : 287,476,845.60 = 70,457,604.80 : x
  2. Step 2: Convert to fraction form
    191,651,230.40/287,476,845.60 = 70,457,604.80/x
  3. Step 3: Cross multiply
    191,651,230.40x = 287,476,845.60 × 70,457,604.80
  4. Step 4: Simplify right side
    191,651,230.40x = 20,254,929,976,435,420
  5. Step 5: Solve for x
    x = 20,254,929,976,435,420/191,651,230.40
  6. Step 6: Final answer
    x = 105,686,407.20

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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.