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Finding the Fourth Proportional to 157,639.60, 236,070.60 and 104,762.80

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Solution

The fourth proportional to 157,639.60, 236,070.60 and 104,762.80 is: 156,885.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,639.60 : 236,070.60 = 104,762.80 : x
  2. Step 2: Convert to fraction form
    157,639.60/236,070.60 = 104,762.80/x
  3. Step 3: Cross multiply
    157,639.60x = 236,070.60 × 104,762.80
  4. Step 4: Simplify right side
    157,639.60x = 24,731,417,053.68
  5. Step 5: Solve for x
    x = 24,731,417,053.68/157,639.60
  6. Step 6: Final answer
    x = 156,885.81

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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.