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Finding the Fourth Proportional to 407,646.45, 611,272.14 and 170,925.57

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Solution

The fourth proportional to 407,646.45, 611,272.14 and 170,925.57 is: 256,305.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,646.45 : 611,272.14 = 170,925.57 : x
  2. Step 2: Convert to fraction form
    407,646.45/611,272.14 = 170,925.57/x
  3. Step 3: Cross multiply
    407,646.45x = 611,272.14 × 170,925.57
  4. Step 4: Simplify right side
    407,646.45x = 104,482,038,954.62
  5. Step 5: Solve for x
    x = 104,482,038,954.62/407,646.45
  6. Step 6: Final answer
    x = 256,305.53

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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.