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Finding the Fourth Proportional to 108,999.70, 152,949.50 and 108,999.70

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Solution

The fourth proportional to 108,999.70, 152,949.50 and 108,999.70 is: 152,949.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,999.70 : 152,949.50 = 108,999.70 : x
  2. Step 2: Convert to fraction form
    108,999.70/152,949.50 = 108,999.70/x
  3. Step 3: Cross multiply
    108,999.70x = 152,949.50 × 108,999.70
  4. Step 4: Simplify right side
    108,999.70x = 16,671,449,615.15
  5. Step 5: Solve for x
    x = 16,671,449,615.15/108,999.70
  6. Step 6: Final answer
    x = 152,949.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.