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Finding the Fourth Proportional to 626,742.08, 864,957.60 and 354,857.88

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Solution

The fourth proportional to 626,742.08, 864,957.60 and 354,857.88 is: 489,734.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,742.08 : 864,957.60 = 354,857.88 : x
  2. Step 2: Convert to fraction form
    626,742.08/864,957.60 = 354,857.88/x
  3. Step 3: Cross multiply
    626,742.08x = 864,957.60 × 354,857.88
  4. Step 4: Simplify right side
    626,742.08x = 306,937,018,451.60
  5. Step 5: Solve for x
    x = 306,937,018,451.60/626,742.08
  6. Step 6: Final answer
    x = 489,734.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.