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Finding the Fourth Proportional to 505,681.04, 697,861.06 and 290,821.28

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Solution

The fourth proportional to 505,681.04, 697,861.06 and 290,821.28 is: 401,345.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,681.04 : 697,861.06 = 290,821.28 : x
  2. Step 2: Convert to fraction form
    505,681.04/697,861.06 = 290,821.28/x
  3. Step 3: Cross multiply
    505,681.04x = 697,861.06 × 290,821.28
  4. Step 4: Simplify right side
    505,681.04x = 202,952,842,515.00
  5. Step 5: Solve for x
    x = 202,952,842,515.00/505,681.04
  6. Step 6: Final answer
    x = 401,345.56

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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.