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Finding the Fourth Proportional to 47,762.60, 65,908.50 and 28,646.60

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Solution

The fourth proportional to 47,762.60, 65,908.50 and 28,646.60 is: 39,529.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,762.60 : 65,908.50 = 28,646.60 : x
  2. Step 2: Convert to fraction form
    47,762.60/65,908.50 = 28,646.60/x
  3. Step 3: Cross multiply
    47,762.60x = 65,908.50 × 28,646.60
  4. Step 4: Simplify right side
    47,762.60x = 1,888,054,436.10
  5. Step 5: Solve for x
    x = 1,888,054,436.10/47,762.60
  6. Step 6: Final answer
    x = 39,529.98

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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.