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Finding the Fourth Proportional to 911,655.92, 1,258,085.12 and 509,247.92

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Solution

The fourth proportional to 911,655.92, 1,258,085.12 and 509,247.92 is: 702,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,655.92 : 1,258,085.12 = 509,247.92 : x
  2. Step 2: Convert to fraction form
    911,655.92/1,258,085.12 = 509,247.92/x
  3. Step 3: Cross multiply
    911,655.92x = 1,258,085.12 × 509,247.92
  4. Step 4: Simplify right side
    911,655.92x = 640,677,230,542.95
  5. Step 5: Solve for x
    x = 640,677,230,542.95/911,655.92
  6. Step 6: Final answer
    x = 702,762.10

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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.