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Finding the Fourth Proportional to 10,602.59, 15,890.13 and 4,355.52

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Solution

The fourth proportional to 10,602.59, 15,890.13 and 4,355.52 is: 6,527.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,602.59 : 15,890.13 = 4,355.52 : x
  2. Step 2: Convert to fraction form
    10,602.59/15,890.13 = 4,355.52/x
  3. Step 3: Cross multiply
    10,602.59x = 15,890.13 × 4,355.52
  4. Step 4: Simplify right side
    10,602.59x = 69,209,779.02
  5. Step 5: Solve for x
    x = 69,209,779.02/10,602.59
  6. Step 6: Final answer
    x = 6,527.63

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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.