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Finding the Fourth Proportional to 525,666.30, 725,419.05 and 283,948.80

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Solution

The fourth proportional to 525,666.30, 725,419.05 and 283,948.80 is: 391,849.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,666.30 : 725,419.05 = 283,948.80 : x
  2. Step 2: Convert to fraction form
    525,666.30/725,419.05 = 283,948.80/x
  3. Step 3: Cross multiply
    525,666.30x = 725,419.05 × 283,948.80
  4. Step 4: Simplify right side
    525,666.30x = 205,981,868,744.64
  5. Step 5: Solve for x
    x = 205,981,868,744.64/525,666.30
  6. Step 6: Final answer
    x = 391,849.10

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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.