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Finding the Fourth Proportional to 572,535.40, 858,803.10 and 257,607.40

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Solution

The fourth proportional to 572,535.40, 858,803.10 and 257,607.40 is: 386,411.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,535.40 : 858,803.10 = 257,607.40 : x
  2. Step 2: Convert to fraction form
    572,535.40/858,803.10 = 257,607.40/x
  3. Step 3: Cross multiply
    572,535.40x = 858,803.10 × 257,607.40
  4. Step 4: Simplify right side
    572,535.40x = 221,234,033,702.94
  5. Step 5: Solve for x
    x = 221,234,033,702.94/572,535.40
  6. Step 6: Final answer
    x = 386,411.10

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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.