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Finding the Fourth Proportional to 64,991.63, 97,490.93 and 18,248.15

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Solution

The fourth proportional to 64,991.63, 97,490.93 and 18,248.15 is: 27,373.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,991.63 : 97,490.93 = 18,248.15 : x
  2. Step 2: Convert to fraction form
    64,991.63/97,490.93 = 18,248.15/x
  3. Step 3: Cross multiply
    64,991.63x = 97,490.93 × 18,248.15
  4. Step 4: Simplify right side
    64,991.63x = 1,779,029,266.77
  5. Step 5: Solve for x
    x = 1,779,029,266.77/64,991.63
  6. Step 6: Final answer
    x = 27,373.20

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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.