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Finding the Fourth Proportional to 693,146.85, 956,143.62 and 417,312.96

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Solution

The fourth proportional to 693,146.85, 956,143.62 and 417,312.96 is: 575,651.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,146.85 : 956,143.62 = 417,312.96 : x
  2. Step 2: Convert to fraction form
    693,146.85/956,143.62 = 417,312.96/x
  3. Step 3: Cross multiply
    693,146.85x = 956,143.62 × 417,312.96
  4. Step 4: Simplify right side
    693,146.85x = 399,011,124,247.32
  5. Step 5: Solve for x
    x = 399,011,124,247.32/693,146.85
  6. Step 6: Final answer
    x = 575,651.64

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.