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Finding the Fourth Proportional to 651,774.30, 977,661.45 and 178,458.90

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Solution

The fourth proportional to 651,774.30, 977,661.45 and 178,458.90 is: 267,688.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,774.30 : 977,661.45 = 178,458.90 : x
  2. Step 2: Convert to fraction form
    651,774.30/977,661.45 = 178,458.90/x
  3. Step 3: Cross multiply
    651,774.30x = 977,661.45 × 178,458.90
  4. Step 4: Simplify right side
    651,774.30x = 174,472,386,939.41
  5. Step 5: Solve for x
    x = 174,472,386,939.41/651,774.30
  6. Step 6: Final answer
    x = 267,688.35

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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.