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Finding the Fourth Proportional to 604,649.30, 906,973.95 and 220,426.98

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Solution

The fourth proportional to 604,649.30, 906,973.95 and 220,426.98 is: 330,640.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,649.30 : 906,973.95 = 220,426.98 : x
  2. Step 2: Convert to fraction form
    604,649.30/906,973.95 = 220,426.98/x
  3. Step 3: Cross multiply
    604,649.30x = 906,973.95 × 220,426.98
  4. Step 4: Simplify right side
    604,649.30x = 199,921,528,737.17
  5. Step 5: Solve for x
    x = 199,921,528,737.17/604,649.30
  6. Step 6: Final answer
    x = 330,640.47

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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.