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Finding the Fourth Proportional to 356,522.40, 534,783.45 and 86,649.11

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Solution

The fourth proportional to 356,522.40, 534,783.45 and 86,649.11 is: 129,973.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,522.40 : 534,783.45 = 86,649.11 : x
  2. Step 2: Convert to fraction form
    356,522.40/534,783.45 = 86,649.11/x
  3. Step 3: Cross multiply
    356,522.40x = 534,783.45 × 86,649.11
  4. Step 4: Simplify right side
    356,522.40x = 46,338,506,878.07
  5. Step 5: Solve for x
    x = 46,338,506,878.07/356,522.40
  6. Step 6: Final answer
    x = 129,973.62

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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.