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Finding the Fourth Proportional to 531,127.46, 732,946.59 and 289,411.99

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Solution

The fourth proportional to 531,127.46, 732,946.59 and 289,411.99 is: 399,383.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,127.46 : 732,946.59 = 289,411.99 : x
  2. Step 2: Convert to fraction form
    531,127.46/732,946.59 = 289,411.99/x
  3. Step 3: Cross multiply
    531,127.46x = 732,946.59 × 289,411.99
  4. Step 4: Simplify right side
    531,127.46x = 212,123,529,343.25
  5. Step 5: Solve for x
    x = 212,123,529,343.25/531,127.46
  6. Step 6: Final answer
    x = 399,383.47

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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.