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Finding the Fourth Proportional to 5,657,691.80, 8,486,537.70 and 5,038,376.60

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Solution

The fourth proportional to 5,657,691.80, 8,486,537.70 and 5,038,376.60 is: 7,557,564.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657,691.80 : 8,486,537.70 = 5,038,376.60 : x
  2. Step 2: Convert to fraction form
    5,657,691.80/8,486,537.70 = 5,038,376.60/x
  3. Step 3: Cross multiply
    5,657,691.80x = 8,486,537.70 × 5,038,376.60
  4. Step 4: Simplify right side
    5,657,691.80x = 42,758,372,962,697.81
  5. Step 5: Solve for x
    x = 42,758,372,962,697.81/5,657,691.80
  6. Step 6: Final answer
    x = 7,557,564.90

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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.