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Finding the Fourth Proportional to 586,220.88, 808,986.24 and 317,948.88

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Solution

The fourth proportional to 586,220.88, 808,986.24 and 317,948.88 is: 438,770.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,220.88 : 808,986.24 = 317,948.88 : x
  2. Step 2: Convert to fraction form
    586,220.88/808,986.24 = 317,948.88/x
  3. Step 3: Cross multiply
    586,220.88x = 808,986.24 × 317,948.88
  4. Step 4: Simplify right side
    586,220.88x = 257,216,268,943.41
  5. Step 5: Solve for x
    x = 257,216,268,943.41/586,220.88
  6. Step 6: Final answer
    x = 438,770.23

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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.