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Finding the Fourth Proportional to 402,718.60, 555,689.46 and 232,968.52

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Solution

The fourth proportional to 402,718.60, 555,689.46 and 232,968.52 is: 321,460.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,718.60 : 555,689.46 = 232,968.52 : x
  2. Step 2: Convert to fraction form
    402,718.60/555,689.46 = 232,968.52/x
  3. Step 3: Cross multiply
    402,718.60x = 555,689.46 × 232,968.52
  4. Step 4: Simplify right side
    402,718.60x = 129,458,151,075.80
  5. Step 5: Solve for x
    x = 129,458,151,075.80/402,718.60
  6. Step 6: Final answer
    x = 321,460.57

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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.