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Finding the Fourth Proportional to 611,543.40, 917,315.10 and 594,047.40

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Solution

The fourth proportional to 611,543.40, 917,315.10 and 594,047.40 is: 891,071.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,543.40 : 917,315.10 = 594,047.40 : x
  2. Step 2: Convert to fraction form
    611,543.40/917,315.10 = 594,047.40/x
  3. Step 3: Cross multiply
    611,543.40x = 917,315.10 × 594,047.40
  4. Step 4: Simplify right side
    611,543.40x = 544,928,650,135.74
  5. Step 5: Solve for x
    x = 544,928,650,135.74/611,543.40
  6. Step 6: Final answer
    x = 891,071.10

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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.