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Finding the Fourth Proportional to 657,962.40, 986,338.80 and 657,559.20

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Solution

The fourth proportional to 657,962.40, 986,338.80 and 657,559.20 is: 985,734.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,962.40 : 986,338.80 = 657,559.20 : x
  2. Step 2: Convert to fraction form
    657,962.40/986,338.80 = 657,559.20/x
  3. Step 3: Cross multiply
    657,962.40x = 986,338.80 × 657,559.20
  4. Step 4: Simplify right side
    657,962.40x = 648,576,152,256.96
  5. Step 5: Solve for x
    x = 648,576,152,256.96/657,962.40
  6. Step 6: Final answer
    x = 985,734.37

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1.5x scale

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.