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Finding the Fourth Proportional to 616,291.20, 924,436.80 and 216,928.80

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Solution

The fourth proportional to 616,291.20, 924,436.80 and 216,928.80 is: 325,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,291.20 : 924,436.80 = 216,928.80 : x
  2. Step 2: Convert to fraction form
    616,291.20/924,436.80 = 216,928.80/x
  3. Step 3: Cross multiply
    616,291.20x = 924,436.80 × 216,928.80
  4. Step 4: Simplify right side
    616,291.20x = 200,536,965,699.84
  5. Step 5: Solve for x
    x = 200,536,965,699.84/616,291.20
  6. Step 6: Final answer
    x = 325,393.20

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1.5x scale

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.