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Finding the Fourth Proportional to 544,988.40, 751,964.76 and 318,530.16

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Solution

The fourth proportional to 544,988.40, 751,964.76 and 318,530.16 is: 439,501.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,988.40 : 751,964.76 = 318,530.16 : x
  2. Step 2: Convert to fraction form
    544,988.40/751,964.76 = 318,530.16/x
  3. Step 3: Cross multiply
    544,988.40x = 751,964.76 × 318,530.16
  4. Step 4: Simplify right side
    544,988.40x = 239,523,455,317.16
  5. Step 5: Solve for x
    x = 239,523,455,317.16/544,988.40
  6. Step 6: Final answer
    x = 439,501.93

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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.