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Finding the Fourth Proportional to 615,143.60, 922,715.40 and 171,911.60

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Solution

The fourth proportional to 615,143.60, 922,715.40 and 171,911.60 is: 257,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,143.60 : 922,715.40 = 171,911.60 : x
  2. Step 2: Convert to fraction form
    615,143.60/922,715.40 = 171,911.60/x
  3. Step 3: Cross multiply
    615,143.60x = 922,715.40 × 171,911.60
  4. Step 4: Simplify right side
    615,143.60x = 158,625,480,758.64
  5. Step 5: Solve for x
    x = 158,625,480,758.64/615,143.60
  6. Step 6: Final answer
    x = 257,867.40

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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.