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Finding the Fourth Proportional to 863,036.16, 1,190,782.80 and 557,047.74

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Solution

The fourth proportional to 863,036.16, 1,190,782.80 and 557,047.74 is: 768,592.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,036.16 : 1,190,782.80 = 557,047.74 : x
  2. Step 2: Convert to fraction form
    863,036.16/1,190,782.80 = 557,047.74/x
  3. Step 3: Cross multiply
    863,036.16x = 1,190,782.80 × 557,047.74
  4. Step 4: Simplify right side
    863,036.16x = 663,322,867,570.87
  5. Step 5: Solve for x
    x = 663,322,867,570.87/863,036.16
  6. Step 6: Final answer
    x = 768,592.21

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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.