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Finding the Fourth Proportional to 64,303.65, 88,743.71 and 38,816.21

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Solution

The fourth proportional to 64,303.65, 88,743.71 and 38,816.21 is: 53,569.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,303.65 : 88,743.71 = 38,816.21 : x
  2. Step 2: Convert to fraction form
    64,303.65/88,743.71 = 38,816.21/x
  3. Step 3: Cross multiply
    64,303.65x = 88,743.71 × 38,816.21
  4. Step 4: Simplify right side
    64,303.65x = 3,444,693,845.74
  5. Step 5: Solve for x
    x = 3,444,693,845.74/64,303.65
  6. Step 6: Final answer
    x = 53,569.18

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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.