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Finding the Fourth Proportional to 127,812.60, 191,913.30 and 98,263.80

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Solution

The fourth proportional to 127,812.60, 191,913.30 and 98,263.80 is: 147,545.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,812.60 : 191,913.30 = 98,263.80 : x
  2. Step 2: Convert to fraction form
    127,812.60/191,913.30 = 98,263.80/x
  3. Step 3: Cross multiply
    127,812.60x = 191,913.30 × 98,263.80
  4. Step 4: Simplify right side
    127,812.60x = 18,858,130,128.54
  5. Step 5: Solve for x
    x = 18,858,130,128.54/127,812.60
  6. Step 6: Final answer
    x = 147,545.16

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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.