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Finding the Fourth Proportional to 58,974.60, 81,488.58 and 47,135.64

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Solution

The fourth proportional to 58,974.60, 81,488.58 and 47,135.64 is: 65,130.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,974.60 : 81,488.58 = 47,135.64 : x
  2. Step 2: Convert to fraction form
    58,974.60/81,488.58 = 47,135.64/x
  3. Step 3: Cross multiply
    58,974.60x = 81,488.58 × 47,135.64
  4. Step 4: Simplify right side
    58,974.60x = 3,841,016,370.99
  5. Step 5: Solve for x
    x = 3,841,016,370.99/58,974.60
  6. Step 6: Final answer
    x = 65,130.01

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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.