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Finding the Fourth Proportional to 61,235.80, 91,853.70 and 16,869.40

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Solution

The fourth proportional to 61,235.80, 91,853.70 and 16,869.40 is: 25,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,235.80 : 91,853.70 = 16,869.40 : x
  2. Step 2: Convert to fraction form
    61,235.80/91,853.70 = 16,869.40/x
  3. Step 3: Cross multiply
    61,235.80x = 91,853.70 × 16,869.40
  4. Step 4: Simplify right side
    61,235.80x = 1,549,516,806.78
  5. Step 5: Solve for x
    x = 1,549,516,806.78/61,235.80
  6. Step 6: Final answer
    x = 25,304.10

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1.5x scale

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.