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Finding the Fourth Proportional to 127,642.45, 191,463.68 and 61,066.93

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Solution

The fourth proportional to 127,642.45, 191,463.68 and 61,066.93 is: 91,600.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,642.45 : 191,463.68 = 61,066.93 : x
  2. Step 2: Convert to fraction form
    127,642.45/191,463.68 = 61,066.93/x
  3. Step 3: Cross multiply
    127,642.45x = 191,463.68 × 61,066.93
  4. Step 4: Simplify right side
    127,642.45x = 11,692,099,144.10
  5. Step 5: Solve for x
    x = 11,692,099,144.10/127,642.45
  6. Step 6: Final answer
    x = 91,600.40

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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.