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Finding the Fourth Proportional to 611,565.10, 917,347.65 and 190,786.30

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Solution

The fourth proportional to 611,565.10, 917,347.65 and 190,786.30 is: 286,179.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,565.10 : 917,347.65 = 190,786.30 : x
  2. Step 2: Convert to fraction form
    611,565.10/917,347.65 = 190,786.30/x
  3. Step 3: Cross multiply
    611,565.10x = 917,347.65 × 190,786.30
  4. Step 4: Simplify right side
    611,565.10x = 175,017,363,957.20
  5. Step 5: Solve for x
    x = 175,017,363,957.20/611,565.10
  6. Step 6: Final answer
    x = 286,179.45

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.