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Finding the Fourth Proportional to 139,008.59, 191,814.68 and 98,707.65

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Solution

The fourth proportional to 139,008.59, 191,814.68 and 98,707.65 is: 136,204.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,008.59 : 191,814.68 = 98,707.65 : x
  2. Step 2: Convert to fraction form
    139,008.59/191,814.68 = 98,707.65/x
  3. Step 3: Cross multiply
    139,008.59x = 191,814.68 × 98,707.65
  4. Step 4: Simplify right side
    139,008.59x = 18,933,575,215.84
  5. Step 5: Solve for x
    x = 18,933,575,215.84/139,008.59
  6. Step 6: Final answer
    x = 136,204.36

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1.5x scale

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.