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Finding the Fourth Proportional to 532,368.74, 797,745 and 390,308.60

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Solution

The fourth proportional to 532,368.74, 797,745 and 390,308.60 is: 584,870.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,368.74 : 797,745 = 390,308.60 : x
  2. Step 2: Convert to fraction form
    532,368.74/797,745 = 390,308.60/x
  3. Step 3: Cross multiply
    532,368.74x = 797,745 × 390,308.60
  4. Step 4: Simplify right side
    532,368.74x = 311,366,734,107
  5. Step 5: Solve for x
    x = 311,366,734,107/532,368.74
  6. Step 6: Final answer
    x = 584,870.43

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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.