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Finding the Fourth Proportional to 693,033.76, 956,376.30 and 387,114.40

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Solution

The fourth proportional to 693,033.76, 956,376.30 and 387,114.40 is: 534,212.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,033.76 : 956,376.30 = 387,114.40 : x
  2. Step 2: Convert to fraction form
    693,033.76/956,376.30 = 387,114.40/x
  3. Step 3: Cross multiply
    693,033.76x = 956,376.30 × 387,114.40
  4. Step 4: Simplify right side
    693,033.76x = 370,227,037,548.72
  5. Step 5: Solve for x
    x = 370,227,037,548.72/693,033.76
  6. Step 6: Final answer
    x = 534,212.12

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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.