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Finding the Fourth Proportional to 180,445.94, 249,015.89 and 99,879.02

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Solution

The fourth proportional to 180,445.94, 249,015.89 and 99,879.02 is: 137,833.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,445.94 : 249,015.89 = 99,879.02 : x
  2. Step 2: Convert to fraction form
    180,445.94/249,015.89 = 99,879.02/x
  3. Step 3: Cross multiply
    180,445.94x = 249,015.89 × 99,879.02
  4. Step 4: Simplify right side
    180,445.94x = 24,871,463,057.63
  5. Step 5: Solve for x
    x = 24,871,463,057.63/180,445.94
  6. Step 6: Final answer
    x = 137,833.32

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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.