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Finding the Fourth Proportional to 88,133.40, 132,005.70 and 53,011.80

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Solution

The fourth proportional to 88,133.40, 132,005.70 and 53,011.80 is: 79,400.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,133.40 : 132,005.70 = 53,011.80 : x
  2. Step 2: Convert to fraction form
    88,133.40/132,005.70 = 53,011.80/x
  3. Step 3: Cross multiply
    88,133.40x = 132,005.70 × 53,011.80
  4. Step 4: Simplify right side
    88,133.40x = 6,997,859,767.26
  5. Step 5: Solve for x
    x = 6,997,859,767.26/88,133.40
  6. Step 6: Final answer
    x = 79,400.77

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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.