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Finding the Fourth Proportional to 623,779.81, 860,815.10 and 351,846.86

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Solution

The fourth proportional to 623,779.81, 860,815.10 and 351,846.86 is: 485,548.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,779.81 : 860,815.10 = 351,846.86 : x
  2. Step 2: Convert to fraction form
    623,779.81/860,815.10 = 351,846.86/x
  3. Step 3: Cross multiply
    623,779.81x = 860,815.10 × 351,846.86
  4. Step 4: Simplify right side
    623,779.81x = 302,875,086,551.13
  5. Step 5: Solve for x
    x = 302,875,086,551.13/623,779.81
  6. Step 6: Final answer
    x = 485,548.08

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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.