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Finding the Fourth Proportional to 668,554.78, 999,970.19 and 620,094.51

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Solution

The fourth proportional to 668,554.78, 999,970.19 and 620,094.51 is: 927,487.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,554.78 : 999,970.19 = 620,094.51 : x
  2. Step 2: Convert to fraction form
    668,554.78/999,970.19 = 620,094.51/x
  3. Step 3: Cross multiply
    668,554.78x = 999,970.19 × 620,094.51
  4. Step 4: Simplify right side
    668,554.78x = 620,076,016,882.33
  5. Step 5: Solve for x
    x = 620,076,016,882.33/668,554.78
  6. Step 6: Final answer
    x = 927,487.22

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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.