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Finding the Fourth Proportional to 657,854.04, 907,846.15 and 385,926.57

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Solution

The fourth proportional to 657,854.04, 907,846.15 and 385,926.57 is: 532,583.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,854.04 : 907,846.15 = 385,926.57 : x
  2. Step 2: Convert to fraction form
    657,854.04/907,846.15 = 385,926.57/x
  3. Step 3: Cross multiply
    657,854.04x = 907,846.15 × 385,926.57
  4. Step 4: Simplify right side
    657,854.04x = 350,361,950,757.21
  5. Step 5: Solve for x
    x = 350,361,950,757.21/657,854.04
  6. Step 6: Final answer
    x = 532,583.11

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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.