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Finding the Fourth Proportional to 108,903,973.80, 163,355,960.70 and 108,903,973.80

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Solution

The fourth proportional to 108,903,973.80, 163,355,960.70 and 108,903,973.80 is: 163,355,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,903,973.80 : 163,355,960.70 = 108,903,973.80 : x
  2. Step 2: Convert to fraction form
    108,903,973.80/163,355,960.70 = 108,903,973.80/x
  3. Step 3: Cross multiply
    108,903,973.80x = 163,355,960.70 × 108,903,973.80
  4. Step 4: Simplify right side
    108,903,973.80x = 17,790,113,264,146,628
  5. Step 5: Solve for x
    x = 17,790,113,264,146,628/108,903,973.80
  6. Step 6: Final answer
    x = 163,355,960.70

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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.