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Finding the Fourth Proportional to 127,263.60, 190,893.96 and 77,357.52

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Solution

The fourth proportional to 127,263.60, 190,893.96 and 77,357.52 is: 116,035.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,263.60 : 190,893.96 = 77,357.52 : x
  2. Step 2: Convert to fraction form
    127,263.60/190,893.96 = 77,357.52/x
  3. Step 3: Cross multiply
    127,263.60x = 190,893.96 × 77,357.52
  4. Step 4: Simplify right side
    127,263.60x = 14,767,083,328.58
  5. Step 5: Solve for x
    x = 14,767,083,328.58/127,263.60
  6. Step 6: Final answer
    x = 116,035.40

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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.