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Finding the Fourth Proportional to 191,999.90, 287,999.85 and 173,629.10

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Solution

The fourth proportional to 191,999.90, 287,999.85 and 173,629.10 is: 260,443.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,999.90 : 287,999.85 = 173,629.10 : x
  2. Step 2: Convert to fraction form
    191,999.90/287,999.85 = 173,629.10/x
  3. Step 3: Cross multiply
    191,999.90x = 287,999.85 × 173,629.10
  4. Step 4: Simplify right side
    191,999.90x = 50,005,154,755.64
  5. Step 5: Solve for x
    x = 50,005,154,755.64/191,999.90
  6. Step 6: Final answer
    x = 260,443.65

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1.5x scale

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.