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Finding the Fourth Proportional to 64,907.52, 97,378.53 and 20,535.06

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Solution

The fourth proportional to 64,907.52, 97,378.53 and 20,535.06 is: 30,808.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,907.52 : 97,378.53 = 20,535.06 : x
  2. Step 2: Convert to fraction form
    64,907.52/97,378.53 = 20,535.06/x
  3. Step 3: Cross multiply
    64,907.52x = 97,378.53 × 20,535.06
  4. Step 4: Simplify right side
    64,907.52x = 1,999,673,956.26
  5. Step 5: Solve for x
    x = 1,999,673,956.26/64,907.52
  6. Step 6: Final answer
    x = 30,808.05

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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.