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Finding the Fourth Proportional to 473,539.90, 653,499.12 and 258,683.53

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Solution

The fourth proportional to 473,539.90, 653,499.12 and 258,683.53 is: 356,990.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,539.90 : 653,499.12 = 258,683.53 : x
  2. Step 2: Convert to fraction form
    473,539.90/653,499.12 = 258,683.53/x
  3. Step 3: Cross multiply
    473,539.90x = 653,499.12 × 258,683.53
  4. Step 4: Simplify right side
    473,539.90x = 169,049,459,213.49
  5. Step 5: Solve for x
    x = 169,049,459,213.49/473,539.90
  6. Step 6: Final answer
    x = 356,990.95

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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.