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Finding the Fourth Proportional to 576,916.40, 865,374.60 and 156,191.60

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Solution

The fourth proportional to 576,916.40, 865,374.60 and 156,191.60 is: 234,287.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,916.40 : 865,374.60 = 156,191.60 : x
  2. Step 2: Convert to fraction form
    576,916.40/865,374.60 = 156,191.60/x
  3. Step 3: Cross multiply
    576,916.40x = 865,374.60 × 156,191.60
  4. Step 4: Simplify right side
    576,916.40x = 135,164,243,373.36
  5. Step 5: Solve for x
    x = 135,164,243,373.36/576,916.40
  6. Step 6: Final answer
    x = 234,287.40

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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.