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Finding the Fourth Proportional to 611,577.90, 917,694.90 and 256,627.80

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Solution

The fourth proportional to 611,577.90, 917,694.90 and 256,627.80 is: 385,079.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,577.90 : 917,694.90 = 256,627.80 : x
  2. Step 2: Convert to fraction form
    611,577.90/917,694.90 = 256,627.80/x
  3. Step 3: Cross multiply
    611,577.90x = 917,694.90 × 256,627.80
  4. Step 4: Simplify right side
    611,577.90x = 235,506,023,258.22
  5. Step 5: Solve for x
    x = 235,506,023,258.22/611,577.90
  6. Step 6: Final answer
    x = 385,079.35

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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.