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Finding the Fourth Proportional to 70,938.60, 97,813.98 and 53,003.40

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Solution

The fourth proportional to 70,938.60, 97,813.98 and 53,003.40 is: 73,083.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,938.60 : 97,813.98 = 53,003.40 : x
  2. Step 2: Convert to fraction form
    70,938.60/97,813.98 = 53,003.40/x
  3. Step 3: Cross multiply
    70,938.60x = 97,813.98 × 53,003.40
  4. Step 4: Simplify right side
    70,938.60x = 5,184,473,507.53
  5. Step 5: Solve for x
    x = 5,184,473,507.53/70,938.60
  6. Step 6: Final answer
    x = 73,083.96

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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.