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Finding the Fourth Proportional to 73,875.40, 110,780.70 and 29,487.40

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Solution

The fourth proportional to 73,875.40, 110,780.70 and 29,487.40 is: 44,218.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,875.40 : 110,780.70 = 29,487.40 : x
  2. Step 2: Convert to fraction form
    73,875.40/110,780.70 = 29,487.40/x
  3. Step 3: Cross multiply
    73,875.40x = 110,780.70 × 29,487.40
  4. Step 4: Simplify right side
    73,875.40x = 3,266,634,813.18
  5. Step 5: Solve for x
    x = 3,266,634,813.18/73,875.40
  6. Step 6: Final answer
    x = 44,218.17

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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.