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Finding the Fourth Proportional to 5,607.72, 7,730.60 and 4,013.92

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Solution

The fourth proportional to 5,607.72, 7,730.60 and 4,013.92 is: 5,533.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,607.72 : 7,730.60 = 4,013.92 : x
  2. Step 2: Convert to fraction form
    5,607.72/7,730.60 = 4,013.92/x
  3. Step 3: Cross multiply
    5,607.72x = 7,730.60 × 4,013.92
  4. Step 4: Simplify right side
    5,607.72x = 31,030,009.95
  5. Step 5: Solve for x
    x = 31,030,009.95/5,607.72
  6. Step 6: Final answer
    x = 5,533.44

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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.