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Finding the Fourth Proportional to 705,349.12, 973,381.54 and 383,059.30

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Solution

The fourth proportional to 705,349.12, 973,381.54 and 383,059.30 is: 528,621.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,349.12 : 973,381.54 = 383,059.30 : x
  2. Step 2: Convert to fraction form
    705,349.12/973,381.54 = 383,059.30/x
  3. Step 3: Cross multiply
    705,349.12x = 973,381.54 × 383,059.30
  4. Step 4: Simplify right side
    705,349.12x = 372,862,851,345.32
  5. Step 5: Solve for x
    x = 372,862,851,345.32/705,349.12
  6. Step 6: Final answer
    x = 528,621.70

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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.