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Finding the Fourth Proportional to 698,746.66, 964,304.60 and 392,919.32

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Solution

The fourth proportional to 698,746.66, 964,304.60 and 392,919.32 is: 542,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,746.66 : 964,304.60 = 392,919.32 : x
  2. Step 2: Convert to fraction form
    698,746.66/964,304.60 = 392,919.32/x
  3. Step 3: Cross multiply
    698,746.66x = 964,304.60 × 392,919.32
  4. Step 4: Simplify right side
    698,746.66x = 378,893,908,151.04
  5. Step 5: Solve for x
    x = 378,893,908,151.04/698,746.66
  6. Step 6: Final answer
    x = 542,247.90

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Double scale
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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.