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Finding the Fourth Proportional to 713,200.84, 1,069,080.70 and 447,148.04

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Solution

The fourth proportional to 713,200.84, 1,069,080.70 and 447,148.04 is: 670,270.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,200.84 : 1,069,080.70 = 447,148.04 : x
  2. Step 2: Convert to fraction form
    713,200.84/1,069,080.70 = 447,148.04/x
  3. Step 3: Cross multiply
    713,200.84x = 1,069,080.70 × 447,148.04
  4. Step 4: Simplify right side
    713,200.84x = 478,037,339,606.83
  5. Step 5: Solve for x
    x = 478,037,339,606.83/713,200.84
  6. Step 6: Final answer
    x = 670,270.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.