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Finding the Fourth Proportional to 199,407.64, 298,941.63 and 87,005.56

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Solution

The fourth proportional to 199,407.64, 298,941.63 and 87,005.56 is: 130,434.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,407.64 : 298,941.63 = 87,005.56 : x
  2. Step 2: Convert to fraction form
    199,407.64/298,941.63 = 87,005.56/x
  3. Step 3: Cross multiply
    199,407.64x = 298,941.63 × 87,005.56
  4. Step 4: Simplify right side
    199,407.64x = 26,009,583,925.46
  5. Step 5: Solve for x
    x = 26,009,583,925.46/199,407.64
  6. Step 6: Final answer
    x = 130,434.24

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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.