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Finding the Fourth Proportional to 657,809.30, 986,713.95 and 657,809.30

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Solution

The fourth proportional to 657,809.30, 986,713.95 and 657,809.30 is: 986,713.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,809.30 : 986,713.95 = 657,809.30 : x
  2. Step 2: Convert to fraction form
    657,809.30/986,713.95 = 657,809.30/x
  3. Step 3: Cross multiply
    657,809.30x = 986,713.95 × 657,809.30
  4. Step 4: Simplify right side
    657,809.30x = 649,069,612,749.74
  5. Step 5: Solve for x
    x = 649,069,612,749.74/657,809.30
  6. Step 6: Final answer
    x = 986,713.95

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Half scale
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Double scale
Find fourth proportional to 657,810.30, 986,715.45 and 657,810.30
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.