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Finding the Fourth Proportional to 660,582.48, 911,573.31 and 374,104.63

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Solution

The fourth proportional to 660,582.48, 911,573.31 and 374,104.63 is: 516,247.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,582.48 : 911,573.31 = 374,104.63 : x
  2. Step 2: Convert to fraction form
    660,582.48/911,573.31 = 374,104.63/x
  3. Step 3: Cross multiply
    660,582.48x = 911,573.31 × 374,104.63
  4. Step 4: Simplify right side
    660,582.48x = 341,023,793,576.49
  5. Step 5: Solve for x
    x = 341,023,793,576.49/660,582.48
  6. Step 6: Final answer
    x = 516,247.11

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1.5x scale

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.