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Finding the Fourth Proportional to 153,816.39, 230,872.28 and 74,985.98

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Solution

The fourth proportional to 153,816.39, 230,872.28 and 74,985.98 is: 112,550.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,816.39 : 230,872.28 = 74,985.98 : x
  2. Step 2: Convert to fraction form
    153,816.39/230,872.28 = 74,985.98/x
  3. Step 3: Cross multiply
    153,816.39x = 230,872.28 × 74,985.98
  4. Step 4: Simplify right side
    153,816.39x = 17,312,182,641.34
  5. Step 5: Solve for x
    x = 17,312,182,641.34/153,816.39
  6. Step 6: Final answer
    x = 112,550.96

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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.