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Finding the Fourth Proportional to 657,999.90, 986,999.85 and 556,523.10

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Solution

The fourth proportional to 657,999.90, 986,999.85 and 556,523.10 is: 834,784.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,999.90 : 986,999.85 = 556,523.10 : x
  2. Step 2: Convert to fraction form
    657,999.90/986,999.85 = 556,523.10/x
  3. Step 3: Cross multiply
    657,999.90x = 986,999.85 × 556,523.10
  4. Step 4: Simplify right side
    657,999.90x = 549,288,216,221.54
  5. Step 5: Solve for x
    x = 549,288,216,221.54/657,999.90
  6. Step 6: Final answer
    x = 834,784.65

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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.