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Finding the Fourth Proportional to 693,230.39, 956,494 and 402,669.28

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Solution

The fourth proportional to 693,230.39, 956,494 and 402,669.28 is: 555,588.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,230.39 : 956,494 = 402,669.28 : x
  2. Step 2: Convert to fraction form
    693,230.39/956,494 = 402,669.28/x
  3. Step 3: Cross multiply
    693,230.39x = 956,494 × 402,669.28
  4. Step 4: Simplify right side
    693,230.39x = 385,150,750,304.32
  5. Step 5: Solve for x
    x = 385,150,750,304.32/693,230.39
  6. Step 6: Final answer
    x = 555,588.38

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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.