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Finding the Fourth Proportional to 265,675.63, 398,070.46 and 190,683.40

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Solution

The fourth proportional to 265,675.63, 398,070.46 and 190,683.40 is: 285,707.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,675.63 : 398,070.46 = 190,683.40 : x
  2. Step 2: Convert to fraction form
    265,675.63/398,070.46 = 190,683.40/x
  3. Step 3: Cross multiply
    265,675.63x = 398,070.46 × 190,683.40
  4. Step 4: Simplify right side
    265,675.63x = 75,905,428,752.36
  5. Step 5: Solve for x
    x = 75,905,428,752.36/265,675.63
  6. Step 6: Final answer
    x = 285,707.16

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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.