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Finding the Fourth Proportional to 7,681.74, 10,602.46 and 4,538.40

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Solution

The fourth proportional to 7,681.74, 10,602.46 and 4,538.40 is: 6,263.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.74 : 10,602.46 = 4,538.40 : x
  2. Step 2: Convert to fraction form
    7,681.74/10,602.46 = 4,538.40/x
  3. Step 3: Cross multiply
    7,681.74x = 10,602.46 × 4,538.40
  4. Step 4: Simplify right side
    7,681.74x = 48,118,204.46
  5. Step 5: Solve for x
    x = 48,118,204.46/7,681.74
  6. Step 6: Final answer
    x = 6,263.97

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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.