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Finding the Fourth Proportional to 282,855.96, 390,425.56 and 186,134.40

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Solution

The fourth proportional to 282,855.96, 390,425.56 and 186,134.40 is: 256,920.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,855.96 : 390,425.56 = 186,134.40 : x
  2. Step 2: Convert to fraction form
    282,855.96/390,425.56 = 186,134.40/x
  3. Step 3: Cross multiply
    282,855.96x = 390,425.56 × 186,134.40
  4. Step 4: Simplify right side
    282,855.96x = 72,671,627,355.26
  5. Step 5: Solve for x
    x = 72,671,627,355.26/282,855.96
  6. Step 6: Final answer
    x = 256,920.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.