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Finding the Fourth Proportional to 97,402.50, 134,415.45 and 52,690.50

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Solution

The fourth proportional to 97,402.50, 134,415.45 and 52,690.50 is: 72,712.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,402.50 : 134,415.45 = 52,690.50 : x
  2. Step 2: Convert to fraction form
    97,402.50/134,415.45 = 52,690.50/x
  3. Step 3: Cross multiply
    97,402.50x = 134,415.45 × 52,690.50
  4. Step 4: Simplify right side
    97,402.50x = 7,082,417,268.23
  5. Step 5: Solve for x
    x = 7,082,417,268.23/97,402.50
  6. Step 6: Final answer
    x = 72,712.89

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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.