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Finding the Fourth Proportional to 63,020.81, 86,970.58 and 34,728.32

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Solution

The fourth proportional to 63,020.81, 86,970.58 and 34,728.32 is: 47,926.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,020.81 : 86,970.58 = 34,728.32 : x
  2. Step 2: Convert to fraction form
    63,020.81/86,970.58 = 34,728.32/x
  3. Step 3: Cross multiply
    63,020.81x = 86,970.58 × 34,728.32
  4. Step 4: Simplify right side
    63,020.81x = 3,020,342,263.43
  5. Step 5: Solve for x
    x = 3,020,342,263.43/63,020.81
  6. Step 6: Final answer
    x = 47,926.11

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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.