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Finding the Fourth Proportional to 65,851.61, 90,875.22 and 35,636.93

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Solution

The fourth proportional to 65,851.61, 90,875.22 and 35,636.93 is: 49,178.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,851.61 : 90,875.22 = 35,636.93 : x
  2. Step 2: Convert to fraction form
    65,851.61/90,875.22 = 35,636.93/x
  3. Step 3: Cross multiply
    65,851.61x = 90,875.22 × 35,636.93
  4. Step 4: Simplify right side
    65,851.61x = 3,238,513,606.64
  5. Step 5: Solve for x
    x = 3,238,513,606.64/65,851.61
  6. Step 6: Final answer
    x = 49,178.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.