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Finding the Fourth Proportional to 55,703.99, 76,875.74 and 31,831.67

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Solution

The fourth proportional to 55,703.99, 76,875.74 and 31,831.67 is: 43,930.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,703.99 : 76,875.74 = 31,831.67 : x
  2. Step 2: Convert to fraction form
    55,703.99/76,875.74 = 31,831.67/x
  3. Step 3: Cross multiply
    55,703.99x = 76,875.74 × 31,831.67
  4. Step 4: Simplify right side
    55,703.99x = 2,447,082,643.15
  5. Step 5: Solve for x
    x = 2,447,082,643.15/55,703.99
  6. Step 6: Final answer
    x = 43,930.12

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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.