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Finding the Fourth Proportional to 985,999.82, 1,360,644 and 618,674.96

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Solution

The fourth proportional to 985,999.82, 1,360,644 and 618,674.96 is: 853,749.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,999.82 : 1,360,644 = 618,674.96 : x
  2. Step 2: Convert to fraction form
    985,999.82/1,360,644 = 618,674.96/x
  3. Step 3: Cross multiply
    985,999.82x = 1,360,644 × 618,674.96
  4. Step 4: Simplify right side
    985,999.82x = 841,796,372,274.24
  5. Step 5: Solve for x
    x = 841,796,372,274.24/985,999.82
  6. Step 6: Final answer
    x = 853,749.01

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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.