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Finding the Fourth Proportional to 655,075.76, 903,994.08 and 368,595.68

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Solution

The fourth proportional to 655,075.76, 903,994.08 and 368,595.68 is: 508,656.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,075.76 : 903,994.08 = 368,595.68 : x
  2. Step 2: Convert to fraction form
    655,075.76/903,994.08 = 368,595.68/x
  3. Step 3: Cross multiply
    655,075.76x = 903,994.08 × 368,595.68
  4. Step 4: Simplify right side
    655,075.76x = 333,208,312,633.57
  5. Step 5: Solve for x
    x = 333,208,312,633.57/655,075.76
  6. Step 6: Final answer
    x = 508,656.15

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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.