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Finding the Fourth Proportional to 708,457.68, 977,690.22 and 436,705.16

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Solution

The fourth proportional to 708,457.68, 977,690.22 and 436,705.16 is: 602,664.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,457.68 : 977,690.22 = 436,705.16 : x
  2. Step 2: Convert to fraction form
    708,457.68/977,690.22 = 436,705.16/x
  3. Step 3: Cross multiply
    708,457.68x = 977,690.22 × 436,705.16
  4. Step 4: Simplify right side
    708,457.68x = 426,962,363,955.54
  5. Step 5: Solve for x
    x = 426,962,363,955.54/708,457.68
  6. Step 6: Final answer
    x = 602,664.60

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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.