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Finding the Fourth Proportional to 713,797.42, 985,103.64 and 391,570.32

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Solution

The fourth proportional to 713,797.42, 985,103.64 and 391,570.32 is: 540,401.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,797.42 : 985,103.64 = 391,570.32 : x
  2. Step 2: Convert to fraction form
    713,797.42/985,103.64 = 391,570.32/x
  3. Step 3: Cross multiply
    713,797.42x = 985,103.64 × 391,570.32
  4. Step 4: Simplify right side
    713,797.42x = 385,737,347,547.97
  5. Step 5: Solve for x
    x = 385,737,347,547.97/713,797.42
  6. Step 6: Final answer
    x = 540,401.71

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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.