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Finding the Fourth Proportional to 661,653.70, 992,480.55 and 603,916.90

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Solution

The fourth proportional to 661,653.70, 992,480.55 and 603,916.90 is: 905,875.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,653.70 : 992,480.55 = 603,916.90 : x
  2. Step 2: Convert to fraction form
    661,653.70/992,480.55 = 603,916.90/x
  3. Step 3: Cross multiply
    661,653.70x = 992,480.55 × 603,916.90
  4. Step 4: Simplify right side
    661,653.70x = 599,375,777,066.30
  5. Step 5: Solve for x
    x = 599,375,777,066.30/661,653.70
  6. Step 6: Final answer
    x = 905,875.35

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.