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Finding the Fourth Proportional to 931,543.80, 1,395,347.40 and 931,543.80

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Solution

The fourth proportional to 931,543.80, 1,395,347.40 and 931,543.80 is: 1,395,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,543.80 : 1,395,347.40 = 931,543.80 : x
  2. Step 2: Convert to fraction form
    931,543.80/1,395,347.40 = 931,543.80/x
  3. Step 3: Cross multiply
    931,543.80x = 1,395,347.40 × 931,543.80
  4. Step 4: Simplify right side
    931,543.80x = 1,299,827,219,316.12
  5. Step 5: Solve for x
    x = 1,299,827,219,316.12/931,543.80
  6. Step 6: Final answer
    x = 1,395,347.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.