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Finding the Fourth Proportional to 692,951.55, 956,210.90 and 386,985.46

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Solution

The fourth proportional to 692,951.55, 956,210.90 and 386,985.46 is: 534,005.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,951.55 : 956,210.90 = 386,985.46 : x
  2. Step 2: Convert to fraction form
    692,951.55/956,210.90 = 386,985.46/x
  3. Step 3: Cross multiply
    692,951.55x = 956,210.90 × 386,985.46
  4. Step 4: Simplify right side
    692,951.55x = 370,039,720,368.44
  5. Step 5: Solve for x
    x = 370,039,720,368.44/692,951.55
  6. Step 6: Final answer
    x = 534,005.19

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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.