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Finding the Fourth Proportional to 717,713.63, 990,857.17 and 476,323.50

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Solution

The fourth proportional to 717,713.63, 990,857.17 and 476,323.50 is: 657,600.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,713.63 : 990,857.17 = 476,323.50 : x
  2. Step 2: Convert to fraction form
    717,713.63/990,857.17 = 476,323.50/x
  3. Step 3: Cross multiply
    717,713.63x = 990,857.17 × 476,323.50
  4. Step 4: Simplify right side
    717,713.63x = 471,968,559,525.61
  5. Step 5: Solve for x
    x = 471,968,559,525.61/717,713.63
  6. Step 6: Final answer
    x = 657,600.11

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Double scale
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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.