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Finding the Fourth Proportional to 381,779.55, 526,862.10 and 209,713.41

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Solution

The fourth proportional to 381,779.55, 526,862.10 and 209,713.41 is: 289,407.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,779.55 : 526,862.10 = 209,713.41 : x
  2. Step 2: Convert to fraction form
    381,779.55/526,862.10 = 209,713.41/x
  3. Step 3: Cross multiply
    381,779.55x = 526,862.10 × 209,713.41
  4. Step 4: Simplify right side
    381,779.55x = 110,490,047,590.76
  5. Step 5: Solve for x
    x = 110,490,047,590.76/381,779.55
  6. Step 6: Final answer
    x = 289,407.98

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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.