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Finding the Fourth Proportional to 572,718.96, 859,077.36 and 319,955.76

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Solution

The fourth proportional to 572,718.96, 859,077.36 and 319,955.76 is: 479,933.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,718.96 : 859,077.36 = 319,955.76 : x
  2. Step 2: Convert to fraction form
    572,718.96/859,077.36 = 319,955.76/x
  3. Step 3: Cross multiply
    572,718.96x = 859,077.36 × 319,955.76
  4. Step 4: Simplify right side
    572,718.96x = 274,866,749,617.59
  5. Step 5: Solve for x
    x = 274,866,749,617.59/572,718.96
  6. Step 6: Final answer
    x = 479,933.04

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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.