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Finding the Fourth Proportional to 61,421.71, 92,271.08 and 36,478.06

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Solution

The fourth proportional to 61,421.71, 92,271.08 and 36,478.06 is: 54,799.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,421.71 : 92,271.08 = 36,478.06 : x
  2. Step 2: Convert to fraction form
    61,421.71/92,271.08 = 36,478.06/x
  3. Step 3: Cross multiply
    61,421.71x = 92,271.08 × 36,478.06
  4. Step 4: Simplify right side
    61,421.71x = 3,365,869,992.50
  5. Step 5: Solve for x
    x = 3,365,869,992.50/61,421.71
  6. Step 6: Final answer
    x = 54,799.35

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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.