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Finding the Fourth Proportional to 77,999.10, 116,998.65 and 65,039.10

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Solution

The fourth proportional to 77,999.10, 116,998.65 and 65,039.10 is: 97,558.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,999.10 : 116,998.65 = 65,039.10 : x
  2. Step 2: Convert to fraction form
    77,999.10/116,998.65 = 65,039.10/x
  3. Step 3: Cross multiply
    77,999.10x = 116,998.65 × 65,039.10
  4. Step 4: Simplify right side
    77,999.10x = 7,609,486,897.22
  5. Step 5: Solve for x
    x = 7,609,486,897.22/77,999.10
  6. Step 6: Final answer
    x = 97,558.65

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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.