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Finding the Fourth Proportional to 652,031,996.80, 978,047,995.20 and 652,031,996.80

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Solution

The fourth proportional to 652,031,996.80, 978,047,995.20 and 652,031,996.80 is: 978,047,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,031,996.80 : 978,047,995.20 = 652,031,996.80 : x
  2. Step 2: Convert to fraction form
    652,031,996.80/978,047,995.20 = 652,031,996.80/x
  3. Step 3: Cross multiply
    652,031,996.80x = 978,047,995.20 × 652,031,996.80
  4. Step 4: Simplify right side
    652,031,996.80x = 637,718,587,276,492,800
  5. Step 5: Solve for x
    x = 637,718,587,276,492,800/652,031,996.80
  6. Step 6: Final answer
    x = 978,047,995.20

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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.