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Finding the Fourth Proportional to 9,695.70, 14,547.60 and 3,123.90

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Solution

The fourth proportional to 9,695.70, 14,547.60 and 3,123.90 is: 4,687.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,695.70 : 14,547.60 = 3,123.90 : x
  2. Step 2: Convert to fraction form
    9,695.70/14,547.60 = 3,123.90/x
  3. Step 3: Cross multiply
    9,695.70x = 14,547.60 × 3,123.90
  4. Step 4: Simplify right side
    9,695.70x = 45,445,247.64
  5. Step 5: Solve for x
    x = 45,445,247.64/9,695.70
  6. Step 6: Final answer
    x = 4,687.15

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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.