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Finding the Fourth Proportional to 985,623,415.02, 1,359,942,862.98 and 583,537,509.30

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Solution

The fourth proportional to 985,623,415.02, 1,359,942,862.98 and 583,537,509.30 is: 805,153,021.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,623,415.02 : 1,359,942,862.98 = 583,537,509.30 : x
  2. Step 2: Convert to fraction form
    985,623,415.02/1,359,942,862.98 = 583,537,509.30/x
  3. Step 3: Cross multiply
    985,623,415.02x = 1,359,942,862.98 × 583,537,509.30
  4. Step 4: Simplify right side
    985,623,415.02x = 793,577,671,053,660,288
  5. Step 5: Solve for x
    x = 793,577,671,053,660,288/985,623,415.02
  6. Step 6: Final answer
    x = 805,153,021.89

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1.5x scale

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.