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Finding the Fourth Proportional to 77,489.84, 106,968.48 and 52,373.36

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Solution

The fourth proportional to 77,489.84, 106,968.48 and 52,373.36 is: 72,297.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,489.84 : 106,968.48 = 52,373.36 : x
  2. Step 2: Convert to fraction form
    77,489.84/106,968.48 = 52,373.36/x
  3. Step 3: Cross multiply
    77,489.84x = 106,968.48 × 52,373.36
  4. Step 4: Simplify right side
    77,489.84x = 5,602,298,711.69
  5. Step 5: Solve for x
    x = 5,602,298,711.69/77,489.84
  6. Step 6: Final answer
    x = 72,297.20

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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.