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Finding the Fourth Proportional to 522,056.90, 783,085.35 and 417,080.90

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Solution

The fourth proportional to 522,056.90, 783,085.35 and 417,080.90 is: 625,621.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,056.90 : 783,085.35 = 417,080.90 : x
  2. Step 2: Convert to fraction form
    522,056.90/783,085.35 = 417,080.90/x
  3. Step 3: Cross multiply
    522,056.90x = 783,085.35 × 417,080.90
  4. Step 4: Simplify right side
    522,056.90x = 326,609,942,554.82
  5. Step 5: Solve for x
    x = 326,609,942,554.82/522,056.90
  6. Step 6: Final answer
    x = 625,621.35

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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.