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Finding the Fourth Proportional to 388,899.60, 583,349.39 and 93,411.60

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Solution

The fourth proportional to 388,899.60, 583,349.39 and 93,411.60 is: 140,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,899.60 : 583,349.39 = 93,411.60 : x
  2. Step 2: Convert to fraction form
    388,899.60/583,349.39 = 93,411.60/x
  3. Step 3: Cross multiply
    388,899.60x = 583,349.39 × 93,411.60
  4. Step 4: Simplify right side
    388,899.60x = 54,491,599,878.92
  5. Step 5: Solve for x
    x = 54,491,599,878.92/388,899.60
  6. Step 6: Final answer
    x = 140,117.40

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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.