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Finding the Fourth Proportional to 388,870.30, 583,171.80 and 189,062.02

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Solution

The fourth proportional to 388,870.30, 583,171.80 and 189,062.02 is: 283,528.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,870.30 : 583,171.80 = 189,062.02 : x
  2. Step 2: Convert to fraction form
    388,870.30/583,171.80 = 189,062.02/x
  3. Step 3: Cross multiply
    388,870.30x = 583,171.80 × 189,062.02
  4. Step 4: Simplify right side
    388,870.30x = 110,255,638,515.04
  5. Step 5: Solve for x
    x = 110,255,638,515.04/388,870.30
  6. Step 6: Final answer
    x = 283,528.05

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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.