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Finding the Fourth Proportional to 719,138.16, 992,505.96 and 432,817.20

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Solution

The fourth proportional to 719,138.16, 992,505.96 and 432,817.20 is: 597,345.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,138.16 : 992,505.96 = 432,817.20 : x
  2. Step 2: Convert to fraction form
    719,138.16/992,505.96 = 432,817.20/x
  3. Step 3: Cross multiply
    719,138.16x = 992,505.96 × 432,817.20
  4. Step 4: Simplify right side
    719,138.16x = 429,573,650,590.51
  5. Step 5: Solve for x
    x = 429,573,650,590.51/719,138.16
  6. Step 6: Final answer
    x = 597,345.09

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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.