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Finding the Fourth Proportional to 865,779.96, 1,194,774.42 and 483,806.78

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Solution

The fourth proportional to 865,779.96, 1,194,774.42 and 483,806.78 is: 667,652.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,779.96 : 1,194,774.42 = 483,806.78 : x
  2. Step 2: Convert to fraction form
    865,779.96/1,194,774.42 = 483,806.78/x
  3. Step 3: Cross multiply
    865,779.96x = 1,194,774.42 × 483,806.78
  4. Step 4: Simplify right side
    865,779.96x = 578,039,964,966.57
  5. Step 5: Solve for x
    x = 578,039,964,966.57/865,779.96
  6. Step 6: Final answer
    x = 667,652.28

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Double scale
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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.