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Finding the Fourth Proportional to 713,504.84, 984,610.02 and 391,207.40

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Solution

The fourth proportional to 713,504.84, 984,610.02 and 391,207.40 is: 539,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,504.84 : 984,610.02 = 391,207.40 : x
  2. Step 2: Convert to fraction form
    713,504.84/984,610.02 = 391,207.40/x
  3. Step 3: Cross multiply
    713,504.84x = 984,610.02 × 391,207.40
  4. Step 4: Simplify right side
    713,504.84x = 385,186,725,938.15
  5. Step 5: Solve for x
    x = 385,186,725,938.15/713,504.84
  6. Step 6: Final answer
    x = 539,851.60

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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.