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Finding the Fourth Proportional to 411,971.60, 617,957.40 and 253,686.80

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Solution

The fourth proportional to 411,971.60, 617,957.40 and 253,686.80 is: 380,530.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,971.60 : 617,957.40 = 253,686.80 : x
  2. Step 2: Convert to fraction form
    411,971.60/617,957.40 = 253,686.80/x
  3. Step 3: Cross multiply
    411,971.60x = 617,957.40 × 253,686.80
  4. Step 4: Simplify right side
    411,971.60x = 156,767,635,342.32
  5. Step 5: Solve for x
    x = 156,767,635,342.32/411,971.60
  6. Step 6: Final answer
    x = 380,530.20

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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.