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Finding the Fourth Proportional to 440,611.50, 608,045.52 and 239,407.50

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Solution

The fourth proportional to 440,611.50, 608,045.52 and 239,407.50 is: 330,383.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,611.50 : 608,045.52 = 239,407.50 : x
  2. Step 2: Convert to fraction form
    440,611.50/608,045.52 = 239,407.50/x
  3. Step 3: Cross multiply
    440,611.50x = 608,045.52 × 239,407.50
  4. Step 4: Simplify right side
    440,611.50x = 145,570,657,829.40
  5. Step 5: Solve for x
    x = 145,570,657,829.40/440,611.50
  6. Step 6: Final answer
    x = 330,383.25

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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.