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Finding the Fourth Proportional to 623,324.55, 861,640.41 and 556,008.69

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Solution

The fourth proportional to 623,324.55, 861,640.41 and 556,008.69 is: 768,587.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,324.55 : 861,640.41 = 556,008.69 : x
  2. Step 2: Convert to fraction form
    623,324.55/861,640.41 = 556,008.69/x
  3. Step 3: Cross multiply
    623,324.55x = 861,640.41 × 556,008.69
  4. Step 4: Simplify right side
    623,324.55x = 479,079,552,835.12
  5. Step 5: Solve for x
    x = 479,079,552,835.12/623,324.55
  6. Step 6: Final answer
    x = 768,587.65

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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.