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Finding the Fourth Proportional to 153,706.36, 230,247.90 and 87,006.28

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Solution

The fourth proportional to 153,706.36, 230,247.90 and 87,006.28 is: 130,333.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,706.36 : 230,247.90 = 87,006.28 : x
  2. Step 2: Convert to fraction form
    153,706.36/230,247.90 = 87,006.28/x
  3. Step 3: Cross multiply
    153,706.36x = 230,247.90 × 87,006.28
  4. Step 4: Simplify right side
    153,706.36x = 20,033,013,256.81
  5. Step 5: Solve for x
    x = 20,033,013,256.81/153,706.36
  6. Step 6: Final answer
    x = 130,333.01

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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.