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Finding the Fourth Proportional to 14,875.72, 20,530.11 and 9,503.10

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Solution

The fourth proportional to 14,875.72, 20,530.11 and 9,503.10 is: 13,115.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,875.72 : 20,530.11 = 9,503.10 : x
  2. Step 2: Convert to fraction form
    14,875.72/20,530.11 = 9,503.10/x
  3. Step 3: Cross multiply
    14,875.72x = 20,530.11 × 9,503.10
  4. Step 4: Simplify right side
    14,875.72x = 195,099,688.34
  5. Step 5: Solve for x
    x = 195,099,688.34/14,875.72
  6. Step 6: Final answer
    x = 13,115.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.