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Finding the Fourth Proportional to 530,756.65, 732,420.83 and 289,024.81

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Solution

The fourth proportional to 530,756.65, 732,420.83 and 289,024.81 is: 398,841.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,756.65 : 732,420.83 = 289,024.81 : x
  2. Step 2: Convert to fraction form
    530,756.65/732,420.83 = 289,024.81/x
  3. Step 3: Cross multiply
    530,756.65x = 732,420.83 × 289,024.81
  4. Step 4: Simplify right side
    530,756.65x = 211,687,790,122.30
  5. Step 5: Solve for x
    x = 211,687,790,122.30/530,756.65
  6. Step 6: Final answer
    x = 398,841.52

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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.