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Finding the Fourth Proportional to 152,628.74, 210,628.28 and 84,652.06

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Solution

The fourth proportional to 152,628.74, 210,628.28 and 84,652.06 is: 116,820.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,628.74 : 210,628.28 = 84,652.06 : x
  2. Step 2: Convert to fraction form
    152,628.74/210,628.28 = 84,652.06/x
  3. Step 3: Cross multiply
    152,628.74x = 210,628.28 × 84,652.06
  4. Step 4: Simplify right side
    152,628.74x = 17,830,117,796.26
  5. Step 5: Solve for x
    x = 17,830,117,796.26/152,628.74
  6. Step 6: Final answer
    x = 116,820.19

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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.