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Finding the Fourth Proportional to 657,630.60, 986,445.90 and 618,264.60

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Solution

The fourth proportional to 657,630.60, 986,445.90 and 618,264.60 is: 927,396.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,630.60 : 986,445.90 = 618,264.60 : x
  2. Step 2: Convert to fraction form
    657,630.60/986,445.90 = 618,264.60/x
  3. Step 3: Cross multiply
    657,630.60x = 986,445.90 × 618,264.60
  4. Step 4: Simplify right side
    657,630.60x = 609,884,579,785.14
  5. Step 5: Solve for x
    x = 609,884,579,785.14/657,630.60
  6. Step 6: Final answer
    x = 927,396.90

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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.