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Finding the Fourth Proportional to 525,521.66, 725,219.78 and 283,804.20

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Solution

The fourth proportional to 525,521.66, 725,219.78 and 283,804.20 is: 391,649.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,521.66 : 725,219.78 = 283,804.20 : x
  2. Step 2: Convert to fraction form
    525,521.66/725,219.78 = 283,804.20/x
  3. Step 3: Cross multiply
    525,521.66x = 725,219.78 × 283,804.20
  4. Step 4: Simplify right side
    525,521.66x = 205,820,418,068.06
  5. Step 5: Solve for x
    x = 205,820,418,068.06/525,521.66
  6. Step 6: Final answer
    x = 391,649.74

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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.