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Finding the Fourth Proportional to 64,703.31, 97,053.99 and 20,332.72

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Solution

The fourth proportional to 64,703.31, 97,053.99 and 20,332.72 is: 30,498.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,703.31 : 97,053.99 = 20,332.72 : x
  2. Step 2: Convert to fraction form
    64,703.31/97,053.99 = 20,332.72/x
  3. Step 3: Cross multiply
    64,703.31x = 97,053.99 × 20,332.72
  4. Step 4: Simplify right side
    64,703.31x = 1,973,371,603.55
  5. Step 5: Solve for x
    x = 1,973,371,603.55/64,703.31
  6. Step 6: Final answer
    x = 30,498.77

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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.