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Finding the Fourth Proportional to 7,971,580,920.90, 11,957,371,381.35 and 7,971,580,920.90

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Solution

The fourth proportional to 7,971,580,920.90, 11,957,371,381.35 and 7,971,580,920.90 is: 11,957,371,381.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971,580,920.90 : 11,957,371,381.35 = 7,971,580,920.90 : x
  2. Step 2: Convert to fraction form
    7,971,580,920.90/11,957,371,381.35 = 7,971,580,920.90/x
  3. Step 3: Cross multiply
    7,971,580,920.90x = 11,957,371,381.35 × 7,971,580,920.90
  4. Step 4: Simplify right side
    7,971,580,920.90x = 95,319,153,567,685,328,896
  5. Step 5: Solve for x
    x = 95,319,153,567,685,328,896/7,971,580,920.90
  6. Step 6: Final answer
    x = 11,957,371,381.35

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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.