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Finding the Fourth Proportional to 139,118.94, 208,681.92 and 44,347.68

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Solution

The fourth proportional to 139,118.94, 208,681.92 and 44,347.68 is: 66,522.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,118.94 : 208,681.92 = 44,347.68 : x
  2. Step 2: Convert to fraction form
    139,118.94/208,681.92 = 44,347.68/x
  3. Step 3: Cross multiply
    139,118.94x = 208,681.92 × 44,347.68
  4. Step 4: Simplify right side
    139,118.94x = 9,254,559,009.95
  5. Step 5: Solve for x
    x = 9,254,559,009.95/139,118.94
  6. Step 6: Final answer
    x = 66,522.64

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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.