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Finding the Fourth Proportional to 56,962.80, 85,444.20 and 15,409.80

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Solution

The fourth proportional to 56,962.80, 85,444.20 and 15,409.80 is: 23,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,962.80 : 85,444.20 = 15,409.80 : x
  2. Step 2: Convert to fraction form
    56,962.80/85,444.20 = 15,409.80/x
  3. Step 3: Cross multiply
    56,962.80x = 85,444.20 × 15,409.80
  4. Step 4: Simplify right side
    56,962.80x = 1,316,678,033.16
  5. Step 5: Solve for x
    x = 1,316,678,033.16/56,962.80
  6. Step 6: Final answer
    x = 23,114.70

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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.