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Finding the Fourth Proportional to 693,153.63, 956,152.91 and 417,319.71

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Solution

The fourth proportional to 693,153.63, 956,152.91 and 417,319.71 is: 575,660.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,153.63 : 956,152.91 = 417,319.71 : x
  2. Step 2: Convert to fraction form
    693,153.63/956,152.91 = 417,319.71/x
  3. Step 3: Cross multiply
    693,153.63x = 956,152.91 × 417,319.71
  4. Step 4: Simplify right side
    693,153.63x = 399,021,453,030.26
  5. Step 5: Solve for x
    x = 399,021,453,030.26/693,153.63
  6. Step 6: Final answer
    x = 575,660.92

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.