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Finding the Fourth Proportional to 127,798.79, 191,552.87 and 77,768.73

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Solution

The fourth proportional to 127,798.79, 191,552.87 and 77,768.73 is: 116,564.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,798.79 : 191,552.87 = 77,768.73 : x
  2. Step 2: Convert to fraction form
    127,798.79/191,552.87 = 77,768.73/x
  3. Step 3: Cross multiply
    127,798.79x = 191,552.87 × 77,768.73
  4. Step 4: Simplify right side
    127,798.79x = 14,896,823,038.91
  5. Step 5: Solve for x
    x = 14,896,823,038.91/127,798.79
  6. Step 6: Final answer
    x = 116,564.67

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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.