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Finding the Fourth Proportional to 77,663.34, 107,366.40 and 76,952.92

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Solution

The fourth proportional to 77,663.34, 107,366.40 and 76,952.92 is: 106,384.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,663.34 : 107,366.40 = 76,952.92 : x
  2. Step 2: Convert to fraction form
    77,663.34/107,366.40 = 76,952.92/x
  3. Step 3: Cross multiply
    77,663.34x = 107,366.40 × 76,952.92
  4. Step 4: Simplify right side
    77,663.34x = 8,262,157,989.89
  5. Step 5: Solve for x
    x = 8,262,157,989.89/77,663.34
  6. Step 6: Final answer
    x = 106,384.27

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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.