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Finding the Fourth Proportional to 897,596.61, 1,239,498.25 and 668,070.05

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Solution

The fourth proportional to 897,596.61, 1,239,498.25 and 668,070.05 is: 922,543.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,596.61 : 1,239,498.25 = 668,070.05 : x
  2. Step 2: Convert to fraction form
    897,596.61/1,239,498.25 = 668,070.05/x
  3. Step 3: Cross multiply
    897,596.61x = 1,239,498.25 × 668,070.05
  4. Step 4: Simplify right side
    897,596.61x = 828,071,649,984.75
  5. Step 5: Solve for x
    x = 828,071,649,984.75/897,596.61
  6. Step 6: Final answer
    x = 922,543.21

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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.