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Finding the Fourth Proportional to 674,461.11, 930,728.59 and 368,548

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Solution

The fourth proportional to 674,461.11, 930,728.59 and 368,548 is: 508,581.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,461.11 : 930,728.59 = 368,548 : x
  2. Step 2: Convert to fraction form
    674,461.11/930,728.59 = 368,548/x
  3. Step 3: Cross multiply
    674,461.11x = 930,728.59 × 368,548
  4. Step 4: Simplify right side
    674,461.11x = 343,018,160,387.32
  5. Step 5: Solve for x
    x = 343,018,160,387.32/674,461.11
  6. Step 6: Final answer
    x = 508,581.08

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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.