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Finding the Fourth Proportional to 706,036, 974,329.68 and 388,084

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Solution

The fourth proportional to 706,036, 974,329.68 and 388,084 is: 535,555.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,036 : 974,329.68 = 388,084 : x
  2. Step 2: Convert to fraction form
    706,036/974,329.68 = 388,084/x
  3. Step 3: Cross multiply
    706,036x = 974,329.68 × 388,084
  4. Step 4: Simplify right side
    706,036x = 378,121,759,533.12
  5. Step 5: Solve for x
    x = 378,121,759,533.12/706,036
  6. Step 6: Final answer
    x = 535,555.92

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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.