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Finding the Fourth Proportional to 572,811.60, 857,467.80 and 446,840.40

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Solution

The fourth proportional to 572,811.60, 857,467.80 and 446,840.40 is: 668,895.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,811.60 : 857,467.80 = 446,840.40 : x
  2. Step 2: Convert to fraction form
    572,811.60/857,467.80 = 446,840.40/x
  3. Step 3: Cross multiply
    572,811.60x = 857,467.80 × 446,840.40
  4. Step 4: Simplify right side
    572,811.60x = 383,151,254,739.12
  5. Step 5: Solve for x
    x = 383,151,254,739.12/572,811.60
  6. Step 6: Final answer
    x = 668,895.77

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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.