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Finding the Fourth Proportional to 572,747.60, 859,121.40 and 292,228.40

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Solution

The fourth proportional to 572,747.60, 859,121.40 and 292,228.40 is: 438,342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,747.60 : 859,121.40 = 292,228.40 : x
  2. Step 2: Convert to fraction form
    572,747.60/859,121.40 = 292,228.40/x
  3. Step 3: Cross multiply
    572,747.60x = 859,121.40 × 292,228.40
  4. Step 4: Simplify right side
    572,747.60x = 251,059,672,127.76
  5. Step 5: Solve for x
    x = 251,059,672,127.76/572,747.60
  6. Step 6: Final answer
    x = 438,342.60

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.