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Finding the Fourth Proportional to 64,802.61, 97,140.74 and 31,521.33

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Solution

The fourth proportional to 64,802.61, 97,140.74 and 31,521.33 is: 47,251.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,802.61 : 97,140.74 = 31,521.33 : x
  2. Step 2: Convert to fraction form
    64,802.61/97,140.74 = 31,521.33/x
  3. Step 3: Cross multiply
    64,802.61x = 97,140.74 × 31,521.33
  4. Step 4: Simplify right side
    64,802.61x = 3,062,005,164.38
  5. Step 5: Solve for x
    x = 3,062,005,164.38/64,802.61
  6. Step 6: Final answer
    x = 47,251.26

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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.