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Finding the Fourth Proportional to 210,775.68, 316,180 and 61,018.22

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Solution

The fourth proportional to 210,775.68, 316,180 and 61,018.22 is: 91,532.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,775.68 : 316,180 = 61,018.22 : x
  2. Step 2: Convert to fraction form
    210,775.68/316,180 = 61,018.22/x
  3. Step 3: Cross multiply
    210,775.68x = 316,180 × 61,018.22
  4. Step 4: Simplify right side
    210,775.68x = 19,292,740,799.60
  5. Step 5: Solve for x
    x = 19,292,740,799.60/210,775.68
  6. Step 6: Final answer
    x = 91,532.10

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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.