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Finding the Fourth Proportional to 627,377.77, 865,779.54 and 340,897.78

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Solution

The fourth proportional to 627,377.77, 865,779.54 and 340,897.78 is: 470,437.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,377.77 : 865,779.54 = 340,897.78 : x
  2. Step 2: Convert to fraction form
    627,377.77/865,779.54 = 340,897.78/x
  3. Step 3: Cross multiply
    627,377.77x = 865,779.54 × 340,897.78
  4. Step 4: Simplify right side
    627,377.77x = 295,142,322,959.28
  5. Step 5: Solve for x
    x = 295,142,322,959.28/627,377.77
  6. Step 6: Final answer
    x = 470,437.97

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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.