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Finding the Fourth Proportional to 572,533.60, 858,476.40 and 217,559.20

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Solution

The fourth proportional to 572,533.60, 858,476.40 and 217,559.20 is: 326,215.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,533.60 : 858,476.40 = 217,559.20 : x
  2. Step 2: Convert to fraction form
    572,533.60/858,476.40 = 217,559.20/x
  3. Step 3: Cross multiply
    572,533.60x = 858,476.40 × 217,559.20
  4. Step 4: Simplify right side
    572,533.60x = 186,769,438,802.88
  5. Step 5: Solve for x
    x = 186,769,438,802.88/572,533.60
  6. Step 6: Final answer
    x = 326,215.68

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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.