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Finding the Fourth Proportional to 531,215.17, 733,055.56 and 289,492.59

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Solution

The fourth proportional to 531,215.17, 733,055.56 and 289,492.59 is: 399,488.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,215.17 : 733,055.56 = 289,492.59 : x
  2. Step 2: Convert to fraction form
    531,215.17/733,055.56 = 289,492.59/x
  3. Step 3: Cross multiply
    531,215.17x = 733,055.56 × 289,492.59
  4. Step 4: Simplify right side
    531,215.17x = 212,214,152,678.30
  5. Step 5: Solve for x
    x = 212,214,152,678.30/531,215.17
  6. Step 6: Final answer
    x = 399,488.13

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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.