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Finding the Fourth Proportional to 692,991, 956,328.06 and 375,039

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Solution

The fourth proportional to 692,991, 956,328.06 and 375,039 is: 517,554.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,991 : 956,328.06 = 375,039 : x
  2. Step 2: Convert to fraction form
    692,991/956,328.06 = 375,039/x
  3. Step 3: Cross multiply
    692,991x = 956,328.06 × 375,039
  4. Step 4: Simplify right side
    692,991x = 358,660,319,294.34
  5. Step 5: Solve for x
    x = 358,660,319,294.34/692,991
  6. Step 6: Final answer
    x = 517,554.08

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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.