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Finding the Fourth Proportional to 705,794,575.06, 973,991,138.34 and 388,248,000.70

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Solution

The fourth proportional to 705,794,575.06, 973,991,138.34 and 388,248,000.70 is: 535,779,284.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,794,575.06 : 973,991,138.34 = 388,248,000.70 : x
  2. Step 2: Convert to fraction form
    705,794,575.06/973,991,138.34 = 388,248,000.70/x
  3. Step 3: Cross multiply
    705,794,575.06x = 973,991,138.34 × 388,248,000.70
  4. Step 4: Simplify right side
    705,794,575.06x = 378,150,112,155,152,192
  5. Step 5: Solve for x
    x = 378,150,112,155,152,192/705,794,575.06
  6. Step 6: Final answer
    x = 535,779,284.11

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.