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Finding the Fourth Proportional to 5,108,989,991.40, 7,663,484,987.10 and 5,108,989,991.40

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Solution

The fourth proportional to 5,108,989,991.40, 7,663,484,987.10 and 5,108,989,991.40 is: 7,663,484,987.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108,989,991.40 : 7,663,484,987.10 = 5,108,989,991.40 : x
  2. Step 2: Convert to fraction form
    5,108,989,991.40/7,663,484,987.10 = 5,108,989,991.40/x
  3. Step 3: Cross multiply
    5,108,989,991.40x = 7,663,484,987.10 × 5,108,989,991.40
  4. Step 4: Simplify right side
    5,108,989,991.40x = 39,152,668,098,338,054,144
  5. Step 5: Solve for x
    x = 39,152,668,098,338,054,144/5,108,989,991.40
  6. Step 6: Final answer
    x = 7,663,484,987.10

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Double scale
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1.5x scale

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.