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Finding the Fourth Proportional to 895,115.30, 1,342,672.95 and 860,123.30

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Solution

The fourth proportional to 895,115.30, 1,342,672.95 and 860,123.30 is: 1,290,184.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    895,115.30 : 1,342,672.95 = 860,123.30 : x
  2. Step 2: Convert to fraction form
    895,115.30/1,342,672.95 = 860,123.30/x
  3. Step 3: Cross multiply
    895,115.30x = 1,342,672.95 × 860,123.30
  4. Step 4: Simplify right side
    895,115.30x = 1,154,864,288,574.74
  5. Step 5: Solve for x
    x = 1,154,864,288,574.74/895,115.30
  6. Step 6: Final answer
    x = 1,290,184.95

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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.