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Finding the Fourth Proportional to 210,826.61, 316,271.17 and 61,048.20

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Solution

The fourth proportional to 210,826.61, 316,271.17 and 61,048.20 is: 91,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,826.61 : 316,271.17 = 61,048.20 : x
  2. Step 2: Convert to fraction form
    210,826.61/316,271.17 = 61,048.20/x
  3. Step 3: Cross multiply
    210,826.61x = 316,271.17 × 61,048.20
  4. Step 4: Simplify right side
    210,826.61x = 19,307,785,640.39
  5. Step 5: Solve for x
    x = 19,307,785,640.39/210,826.61
  6. Step 6: Final answer
    x = 91,581.35

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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.