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Finding the Fourth Proportional to 586,626.16, 809,544.10 and 318,354.16

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Solution

The fourth proportional to 586,626.16, 809,544.10 and 318,354.16 is: 439,328.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,626.16 : 809,544.10 = 318,354.16 : x
  2. Step 2: Convert to fraction form
    586,626.16/809,544.10 = 318,354.16/x
  3. Step 3: Cross multiply
    586,626.16x = 809,544.10 × 318,354.16
  4. Step 4: Simplify right side
    586,626.16x = 257,721,727,890.74
  5. Step 5: Solve for x
    x = 257,721,727,890.74/586,626.16
  6. Step 6: Final answer
    x = 439,328.74

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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.