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Finding the Fourth Proportional to 611,585.60, 917,597.10 and 256,708.40

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Solution

The fourth proportional to 611,585.60, 917,597.10 and 256,708.40 is: 385,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,585.60 : 917,597.10 = 256,708.40 : x
  2. Step 2: Convert to fraction form
    611,585.60/917,597.10 = 256,708.40/x
  3. Step 3: Cross multiply
    611,585.60x = 917,597.10 × 256,708.40
  4. Step 4: Simplify right side
    611,585.60x = 235,554,883,385.64
  5. Step 5: Solve for x
    x = 235,554,883,385.64/611,585.60
  6. Step 6: Final answer
    x = 385,154.40

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Similar ratio
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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.