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Finding the Fourth Proportional to 623,474.28, 933,726.88 and 398,136.74

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Solution

The fourth proportional to 623,474.28, 933,726.88 and 398,136.74 is: 596,257.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,474.28 : 933,726.88 = 398,136.74 : x
  2. Step 2: Convert to fraction form
    623,474.28/933,726.88 = 398,136.74/x
  3. Step 3: Cross multiply
    623,474.28x = 933,726.88 × 398,136.74
  4. Step 4: Simplify right side
    623,474.28x = 371,750,971,322.73
  5. Step 5: Solve for x
    x = 371,750,971,322.73/623,474.28
  6. Step 6: Final answer
    x = 596,257.11

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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.