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Finding the Fourth Proportional to 139,646.88, 192,578.63 and 93,810.20

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Solution

The fourth proportional to 139,646.88, 192,578.63 and 93,810.20 is: 129,368.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,646.88 : 192,578.63 = 93,810.20 : x
  2. Step 2: Convert to fraction form
    139,646.88/192,578.63 = 93,810.20/x
  3. Step 3: Cross multiply
    139,646.88x = 192,578.63 × 93,810.20
  4. Step 4: Simplify right side
    139,646.88x = 18,065,838,364.08
  5. Step 5: Solve for x
    x = 18,065,838,364.08/139,646.88
  6. Step 6: Final answer
    x = 129,368.01

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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.