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Finding the Fourth Proportional to 1,085,185,211.40, 1,521,300,029.40 and 1,085,185,211.40

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Solution

The fourth proportional to 1,085,185,211.40, 1,521,300,029.40 and 1,085,185,211.40 is: 1,521,300,029.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085,185,211.40 : 1,521,300,029.40 = 1,085,185,211.40 : x
  2. Step 2: Convert to fraction form
    1,085,185,211.40/1,521,300,029.40 = 1,085,185,211.40/x
  3. Step 3: Cross multiply
    1,085,185,211.40x = 1,521,300,029.40 × 1,085,185,211.40
  4. Step 4: Simplify right side
    1,085,185,211.40x = 1,650,892,294,007,265,536
  5. Step 5: Solve for x
    x = 1,650,892,294,007,265,536/1,085,185,211.40
  6. Step 6: Final answer
    x = 1,521,300,029.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.