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Finding the Fourth Proportional to 7,035.42, 9,709.56 and 4,678.32

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Solution

The fourth proportional to 7,035.42, 9,709.56 and 4,678.32 is: 6,456.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,035.42 : 9,709.56 = 4,678.32 : x
  2. Step 2: Convert to fraction form
    7,035.42/9,709.56 = 4,678.32/x
  3. Step 3: Cross multiply
    7,035.42x = 9,709.56 × 4,678.32
  4. Step 4: Simplify right side
    7,035.42x = 45,424,428.74
  5. Step 5: Solve for x
    x = 45,424,428.74/7,035.42
  6. Step 6: Final answer
    x = 6,456.53

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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.