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Finding the Fourth Proportional to 693,209.60, 956,117.04 and 438,315.20

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Solution

The fourth proportional to 693,209.60, 956,117.04 and 438,315.20 is: 604,551.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,209.60 : 956,117.04 = 438,315.20 : x
  2. Step 2: Convert to fraction form
    693,209.60/956,117.04 = 438,315.20/x
  3. Step 3: Cross multiply
    693,209.60x = 956,117.04 × 438,315.20
  4. Step 4: Simplify right side
    693,209.60x = 419,080,631,611.01
  5. Step 5: Solve for x
    x = 419,080,631,611.01/693,209.60
  6. Step 6: Final answer
    x = 604,551.11

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Similar ratio
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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.