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Finding the Fourth Proportional to 531,069.65, 732,866.79 and 289,353.95

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Solution

The fourth proportional to 531,069.65, 732,866.79 and 289,353.95 is: 399,303.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,069.65 : 732,866.79 = 289,353.95 : x
  2. Step 2: Convert to fraction form
    531,069.65/732,866.79 = 289,353.95/x
  3. Step 3: Cross multiply
    531,069.65x = 732,866.79 × 289,353.95
  4. Step 4: Simplify right side
    531,069.65x = 212,057,900,510.32
  5. Step 5: Solve for x
    x = 212,057,900,510.32/531,069.65
  6. Step 6: Final answer
    x = 399,303.37

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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.