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Finding the Fourth Proportional to 690,422.59, 953,077.76 and 464,199.31

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Solution

The fourth proportional to 690,422.59, 953,077.76 and 464,199.31 is: 640,793.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,422.59 : 953,077.76 = 464,199.31 : x
  2. Step 2: Convert to fraction form
    690,422.59/953,077.76 = 464,199.31/x
  3. Step 3: Cross multiply
    690,422.59x = 953,077.76 × 464,199.31
  4. Step 4: Simplify right side
    690,422.59x = 442,418,038,568.35
  5. Step 5: Solve for x
    x = 442,418,038,568.35/690,422.59
  6. Step 6: Final answer
    x = 640,793.11

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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.