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Finding the Fourth Proportional to 652,091.51, 978,137.81 and 525,136.43

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Solution

The fourth proportional to 652,091.51, 978,137.81 and 525,136.43 is: 787,705.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,091.51 : 978,137.81 = 525,136.43 : x
  2. Step 2: Convert to fraction form
    652,091.51/978,137.81 = 525,136.43/x
  3. Step 3: Cross multiply
    652,091.51x = 978,137.81 × 525,136.43
  4. Step 4: Simplify right side
    652,091.51x = 513,655,790,075.05
  5. Step 5: Solve for x
    x = 513,655,790,075.05/652,091.51
  6. Step 6: Final answer
    x = 787,705.08

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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.