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Finding the Fourth Proportional to 363,999.30, 545,998.95 and 357,000.90

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Solution

The fourth proportional to 363,999.30, 545,998.95 and 357,000.90 is: 535,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,999.30 : 545,998.95 = 357,000.90 : x
  2. Step 2: Convert to fraction form
    363,999.30/545,998.95 = 357,000.90/x
  3. Step 3: Cross multiply
    363,999.30x = 545,998.95 × 357,000.90
  4. Step 4: Simplify right side
    363,999.30x = 194,922,116,549.06
  5. Step 5: Solve for x
    x = 194,922,116,549.06/363,999.30
  6. Step 6: Final answer
    x = 535,501.35

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Double scale
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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.