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Finding the Fourth Proportional to 623,595.32, 859,987.56 and 408,657.32

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Solution

The fourth proportional to 623,595.32, 859,987.56 and 408,657.32 is: 563,570.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,595.32 : 859,987.56 = 408,657.32 : x
  2. Step 2: Convert to fraction form
    623,595.32/859,987.56 = 408,657.32/x
  3. Step 3: Cross multiply
    623,595.32x = 859,987.56 × 408,657.32
  4. Step 4: Simplify right side
    623,595.32x = 351,440,211,502.94
  5. Step 5: Solve for x
    x = 351,440,211,502.94/623,595.32
  6. Step 6: Final answer
    x = 563,570.96

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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.