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Finding the Fourth Proportional to 191,840.10, 264,828.48 and 136,684.98

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Solution

The fourth proportional to 191,840.10, 264,828.48 and 136,684.98 is: 188,688.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,840.10 : 264,828.48 = 136,684.98 : x
  2. Step 2: Convert to fraction form
    191,840.10/264,828.48 = 136,684.98/x
  3. Step 3: Cross multiply
    191,840.10x = 264,828.48 × 136,684.98
  4. Step 4: Simplify right side
    191,840.10x = 36,198,075,492.23
  5. Step 5: Solve for x
    x = 36,198,075,492.23/191,840.10
  6. Step 6: Final answer
    x = 188,688.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.