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Finding the Fourth Proportional to 64,899.19, 97,360.80 and 20,537.11

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Solution

The fourth proportional to 64,899.19, 97,360.80 and 20,537.11 is: 30,809.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,899.19 : 97,360.80 = 20,537.11 : x
  2. Step 2: Convert to fraction form
    64,899.19/97,360.80 = 20,537.11/x
  3. Step 3: Cross multiply
    64,899.19x = 97,360.80 × 20,537.11
  4. Step 4: Simplify right side
    64,899.19x = 1,999,509,459.29
  5. Step 5: Solve for x
    x = 1,999,509,459.29/64,899.19
  6. Step 6: Final answer
    x = 30,809.47

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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.