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Finding the Fourth Proportional to 691,336.95, 954,048.95 and 385,432.75

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Solution

The fourth proportional to 691,336.95, 954,048.95 and 385,432.75 is: 531,899.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,336.95 : 954,048.95 = 385,432.75 : x
  2. Step 2: Convert to fraction form
    691,336.95/954,048.95 = 385,432.75/x
  3. Step 3: Cross multiply
    691,336.95x = 954,048.95 × 385,432.75
  4. Step 4: Simplify right side
    691,336.95x = 367,721,710,433.11
  5. Step 5: Solve for x
    x = 367,721,710,433.11/691,336.95
  6. Step 6: Final answer
    x = 531,899.40

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Double scale
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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.