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Finding the Fourth Proportional to 651,638.80, 977,458.20 and 546,662.80

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Solution

The fourth proportional to 651,638.80, 977,458.20 and 546,662.80 is: 819,994.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,638.80 : 977,458.20 = 546,662.80 : x
  2. Step 2: Convert to fraction form
    651,638.80/977,458.20 = 546,662.80/x
  3. Step 3: Cross multiply
    651,638.80x = 977,458.20 × 546,662.80
  4. Step 4: Simplify right side
    651,638.80x = 534,340,036,494.96
  5. Step 5: Solve for x
    x = 534,340,036,494.96/651,638.80
  6. Step 6: Final answer
    x = 819,994.20

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Double scale
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Similar ratio
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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.