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Finding the Fourth Proportional to 70,513.60, 97,318.80 and 43,664.80

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Solution

The fourth proportional to 70,513.60, 97,318.80 and 43,664.80 is: 60,263.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,513.60 : 97,318.80 = 43,664.80 : x
  2. Step 2: Convert to fraction form
    70,513.60/97,318.80 = 43,664.80/x
  3. Step 3: Cross multiply
    70,513.60x = 97,318.80 × 43,664.80
  4. Step 4: Simplify right side
    70,513.60x = 4,249,405,938.24
  5. Step 5: Solve for x
    x = 4,249,405,938.24/70,513.60
  6. Step 6: Final answer
    x = 60,263.64

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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.