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Finding the Fourth Proportional to 407,097.60, 610,646.40 and 197,145.60

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Solution

The fourth proportional to 407,097.60, 610,646.40 and 197,145.60 is: 295,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,097.60 : 610,646.40 = 197,145.60 : x
  2. Step 2: Convert to fraction form
    407,097.60/610,646.40 = 197,145.60/x
  3. Step 3: Cross multiply
    407,097.60x = 610,646.40 × 197,145.60
  4. Step 4: Simplify right side
    407,097.60x = 120,386,250,915.84
  5. Step 5: Solve for x
    x = 120,386,250,915.84/407,097.60
  6. Step 6: Final answer
    x = 295,718.40

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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.