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Finding the Fourth Proportional to 586,040.21, 877,922.88 and 431,886.23

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Solution

The fourth proportional to 586,040.21, 877,922.88 and 431,886.23 is: 646,991.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,040.21 : 877,922.88 = 431,886.23 : x
  2. Step 2: Convert to fraction form
    586,040.21/877,922.88 = 431,886.23/x
  3. Step 3: Cross multiply
    586,040.21x = 877,922.88 × 431,886.23
  4. Step 4: Simplify right side
    586,040.21x = 379,162,805,068.75
  5. Step 5: Solve for x
    x = 379,162,805,068.75/586,040.21
  6. Step 6: Final answer
    x = 646,991.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.