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Finding the Fourth Proportional to 660,570.88, 911,592.48 and 358,764.88

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Solution

The fourth proportional to 660,570.88, 911,592.48 and 358,764.88 is: 495,098.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,570.88 : 911,592.48 = 358,764.88 : x
  2. Step 2: Convert to fraction form
    660,570.88/911,592.48 = 358,764.88/x
  3. Step 3: Cross multiply
    660,570.88x = 911,592.48 × 358,764.88
  4. Step 4: Simplify right side
    660,570.88x = 327,047,366,696.10
  5. Step 5: Solve for x
    x = 327,047,366,696.10/660,570.88
  6. Step 6: Final answer
    x = 495,098.07

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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.