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Finding the Fourth Proportional to 74,615.40, 112,052.70 and 39,623.40

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Solution

The fourth proportional to 74,615.40, 112,052.70 and 39,623.40 is: 59,503.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,615.40 : 112,052.70 = 39,623.40 : x
  2. Step 2: Convert to fraction form
    74,615.40/112,052.70 = 39,623.40/x
  3. Step 3: Cross multiply
    74,615.40x = 112,052.70 × 39,623.40
  4. Step 4: Simplify right side
    74,615.40x = 4,439,908,953.18
  5. Step 5: Solve for x
    x = 4,439,908,953.18/74,615.40
  6. Step 6: Final answer
    x = 59,503.92

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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.