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Finding the Fourth Proportional to 693,520.10, 957,038.65 and 387,597.68

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Solution

The fourth proportional to 693,520.10, 957,038.65 and 387,597.68 is: 534,874.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,520.10 : 957,038.65 = 387,597.68 : x
  2. Step 2: Convert to fraction form
    693,520.10/957,038.65 = 387,597.68/x
  3. Step 3: Cross multiply
    693,520.10x = 957,038.65 × 387,597.68
  4. Step 4: Simplify right side
    693,520.10x = 370,945,960,410.33
  5. Step 5: Solve for x
    x = 370,945,960,410.33/693,520.10
  6. Step 6: Final answer
    x = 534,874.13

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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.