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Finding the Fourth Proportional to 14,920,666,377.60, 20,919,509,404.80 and 14,920,666,377.60

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Solution

The fourth proportional to 14,920,666,377.60, 20,919,509,404.80 and 14,920,666,377.60 is: 20,919,509,404.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920,666,377.60 : 20,919,509,404.80 = 14,920,666,377.60 : x
  2. Step 2: Convert to fraction form
    14,920,666,377.60/20,919,509,404.80 = 14,920,666,377.60/x
  3. Step 3: Cross multiply
    14,920,666,377.60x = 20,919,509,404.80 × 14,920,666,377.60
  4. Step 4: Simplify right side
    14,920,666,377.60x = 312,133,020,612,086,333,440
  5. Step 5: Solve for x
    x = 312,133,020,612,086,333,440/14,920,666,377.60
  6. Step 6: Final answer
    x = 20,919,509,404.80

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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.