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Finding the Fourth Proportional to 939,429,809.80, 1,409,144,714.70 and 939,429,809.80

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Solution

The fourth proportional to 939,429,809.80, 1,409,144,714.70 and 939,429,809.80 is: 1,409,144,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,429,809.80 : 1,409,144,714.70 = 939,429,809.80 : x
  2. Step 2: Convert to fraction form
    939,429,809.80/1,409,144,714.70 = 939,429,809.80/x
  3. Step 3: Cross multiply
    939,429,809.80x = 1,409,144,714.70 × 939,429,809.80
  4. Step 4: Simplify right side
    939,429,809.80x = 1,323,792,551,311,296,256
  5. Step 5: Solve for x
    x = 1,323,792,551,311,296,256/939,429,809.80
  6. Step 6: Final answer
    x = 1,409,144,714.70

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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.