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Finding the Fourth Proportional to 868,512.12, 1,308,684.57 and 714,197.40

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Solution

The fourth proportional to 868,512.12, 1,308,684.57 and 714,197.40 is: 1,076,161.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,512.12 : 1,308,684.57 = 714,197.40 : x
  2. Step 2: Convert to fraction form
    868,512.12/1,308,684.57 = 714,197.40/x
  3. Step 3: Cross multiply
    868,512.12x = 1,308,684.57 × 714,197.40
  4. Step 4: Simplify right side
    868,512.12x = 934,659,117,314.12
  5. Step 5: Solve for x
    x = 934,659,117,314.12/868,512.12
  6. Step 6: Final answer
    x = 1,076,161.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.