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Finding the Fourth Proportional to 572,558.60, 790,056.50 and 317,860.58

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Solution

The fourth proportional to 572,558.60, 790,056.50 and 317,860.58 is: 438,606.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,558.60 : 790,056.50 = 317,860.58 : x
  2. Step 2: Convert to fraction form
    572,558.60/790,056.50 = 317,860.58/x
  3. Step 3: Cross multiply
    572,558.60x = 790,056.50 × 317,860.58
  4. Step 4: Simplify right side
    572,558.60x = 251,127,817,322.77
  5. Step 5: Solve for x
    x = 251,127,817,322.77/572,558.60
  6. Step 6: Final answer
    x = 438,606.31

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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.