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Finding the Fourth Proportional to 678,932.22, 936,927 and 373,028.34

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Solution

The fourth proportional to 678,932.22, 936,927 and 373,028.34 is: 514,779.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,932.22 : 936,927 = 373,028.34 : x
  2. Step 2: Convert to fraction form
    678,932.22/936,927 = 373,028.34/x
  3. Step 3: Cross multiply
    678,932.22x = 936,927 × 373,028.34
  4. Step 4: Simplify right side
    678,932.22x = 349,500,323,511.18
  5. Step 5: Solve for x
    x = 349,500,323,511.18/678,932.22
  6. Step 6: Final answer
    x = 514,779.40

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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.