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Finding the Fourth Proportional to 626,411.80, 940,136.10 and 289,970.20

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Solution

The fourth proportional to 626,411.80, 940,136.10 and 289,970.20 is: 435,195.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,411.80 : 940,136.10 = 289,970.20 : x
  2. Step 2: Convert to fraction form
    626,411.80/940,136.10 = 289,970.20/x
  3. Step 3: Cross multiply
    626,411.80x = 940,136.10 × 289,970.20
  4. Step 4: Simplify right side
    626,411.80x = 272,611,452,944.22
  5. Step 5: Solve for x
    x = 272,611,452,944.22/626,411.80
  6. Step 6: Final answer
    x = 435,195.27

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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.